Hide Things in Plain Sight (Diversion Stash Cans)
A diversion can is a commercially made container that looks like an everyday product but has a hidden cavity for a small item. Choose one for lawful, dry, nonhazardous contents. Check the exact model’s usable space, closure, and stated limits. Keep it intact, indoors, and easy to retrieve. It is not secure storage or a reason to alter your home.
The simplest setup is usually the safest: choose a can, check its interior, place a suitable item inside, and return the can to an ordinary indoor spot. There is no need to cut into a wall or build a hidden compartment. That matters because a quick concealment idea should not create a safety, access, or code problem.
I approach these products as ordinary containers, not as security devices. Their value is limited concealment, and their usefulness depends on a good fit and a sensible location. Before buying one, decide what you want to store and whether it belongs in a disguised container at all.
Planning: Item Suitability and Product Selection
A diversion can is a portable container made to resemble a familiar product, with an interior cavity for a small item. Product dimensions and features vary by exact model. No universal cavity size, wall thickness, or load rating applies, so select by the manufacturer’s details rather than by the label or exterior appearance.
Start with the item. It should be lawful, dry, nonhazardous, and suitable for storage under the product’s stated conditions. A small paper note or an ordinary spare key may fit the purpose. Medication, chemicals, food, lithium batteries, and firearms do not belong in a disguised can. Concealment can defeat labeling, child-resistant packaging, temperature guidance, or secure-storage practices.
Then check the product’s exact model or SKU. The usable cavity means the actual open space inside, not the container’s listed volume or outside dimensions. Look for interior measurements, closure details, and any limits or warnings from the maker. If a needed limit is not stated, treat it as unknown rather than assuming the can can handle a particular weight or temperature.
| Check before buying | What to confirm | If you cannot confirm it |
|---|---|---|
| Interior fit | Usable cavity suits the item | Choose another model |
| Shell and lid | Item does not strain or distort them | Do not force the fit |
| Product limits | Any stated temperature or load limits work for your setting | Treat unstated limits as unspecified |
| Intended contents | Item is dry, inert, and suitable for ordinary container storage | Use approved storage instead |
A product that looks right on a shelf may have very little usable room once its inner shell or lid is accounted for. Measure the item first, then compare it with the maker’s cavity dimensions. If those dimensions are unavailable, do not rely on the can’s nominal size.
Access and Clearances: Fit, Closure, and Retrieval
Fit is more than whether an item can be pushed inside. The can should close as designed, stay in its intended shape, and allow the item to come back out without tools or damage. There is no standard clearance for all diversion cans; the relevant check is the fit and operation of the exact product you choose.
Test the item before settling on a location. Place it inside, close the lid or shell, and open it again. The item should not press against the closure, jam the opening, or make the can look misshapen. If it catches or requires force, the product is too small or poorly suited to that item.
Plan retrieval as carefully as concealment. A container placed behind heavy objects or in a spot that requires dismantling furniture may be hard to use and easy to damage. Keep it in a normal indoor location where you can reach it without moving equipment or altering the home.
A useful fit check is:
- The item enters and comes out without bending or wedging.
- The closure works fully and does not rely on added tape or other changes.
- The can remains stable and does not look distorted.
- You can retrieve the item without tools or damage.
- Children and other unintended users cannot reach the contents.
Do not treat “hidden” as “secure.” A diversion can may be found, opened, moved, or mistaken for a real product. If loss, theft, accidental access, or safe custody is a concern, use a storage method designed for that purpose instead.
Execution: Use the Container Without Alteration
Use the can as the manufacturer made it, in an ordinary indoor setting. Do not cut, drill, attach, or build around it. Keeping it portable avoids turning a simple household product into an unreviewed part of a wall, cabinet, ceiling, or building system.
Follow this sequence:
- Identify the item and confirm it is lawful, dry, nonhazardous, and appropriate for the product’s stated limits.
- Check the exact model’s cavity and closure. Reject it if the item strains the shell, prevents a full closure, or cannot be retrieved cleanly.
- Put the item inside and close the can as designed. Do not modify the container or add a new latch.
- Choose an ordinary indoor location where the can will not be mistaken for a consumable or create a trip, heat, or access concern.
- Confirm that unintended users, especially children, cannot access the item. If that cannot be assured, choose different storage.
A disguised can does not need ventilation for ordinary inert, dry contents. That does not mean it is suitable for every item: do not use it for anything with manufacturer-specified airflow, temperature, or other storage conditions. Do not place it near a heat source or in a location that may exceed the product’s stated limits.
The container should remain a standalone object. Do not hide it inside a wall, ceiling, cabinet, or rated assembly, and do not alter electrical, plumbing, fire-rated, or structural parts to make a cavity for it. Building and fire rules depend on the location and assembly; no universal clearance can be given without those details. For a portable can, the straightforward choice is to leave the building intact.
Verification: Contents, Limits, and Safe Access
Verification means checking that the product still works as intended after you load it. Confirm that the item remains dry, the closure stays secure, and the can can be opened without tools or damage. Recheck the manufacturer’s stated limits whenever the product or storage location changes.
Do not infer a load rating from how sturdy the shell feels. Do not assume a temperature range if the maker does not state one. If the product’s limits are missing and your intended use depends on knowing them, choose a different product with suitable information.
Keep contents simple and compatible. A disguised container is not a substitute for approved storage:
- Medication should remain in its proper, labeled packaging and be stored as directed.
- Chemicals and other hazardous products need the storage required by their labels.
- Lithium batteries should not be placed in a container that hides their identity or prevents proper storage.
- Firearms require secure storage practices; a diversion can is not a substitute.
- Food and other consumables should not be put where someone could mistake the can for the real product.
There is no airflow or CFM requirement for a portable can holding ordinary inert, dry items. CFM is a measure of airflow, but it is not relevant to this basic use. If an item needs ventilation or temperature control, use storage designed to meet those needs.
Practical Scenarios: Choosing a Can and a Location
These examples are decision guides, not claims about a specific product or client installation. They show how I would assess fit and safety before using a diversion can. In each case, the exact model’s cavity and maker’s limits still control the decision.
A spare key: A homeowner wants to keep a spare key out of immediate view indoors. I would first check that it fits without pushing against the lid. I would avoid a can that could be mistaken for a food or drink item and would not treat concealment as a replacement for secure key management.
A paper note: Someone wants to keep a short, dry note in an everyday-looking container. This is a low-complexity use if the paper fits freely and the can closes normally. The note should remain retrievable, and the location should not expose it to moisture or heat beyond the product’s stated limits.
An item that needs special storage: If the proposed contents are medication, a battery, a chemical, or another regulated or temperature-sensitive item, I would stop the selection process. The problem is not whether it fits; hiding it can interfere with required labels, safe access, or storage guidance. Use the approved packaging and storage method instead.
The key distinction is between an item that is merely out of sight and one that needs protection, security, or controlled conditions. A diversion can only serves the first purpose.
Conclusion and FAQ
A diversion can works best as an intact, ordinary container for a small, lawful, dry, nonhazardous item. Check the exact model, test the fit and closure, and choose a location that remains accessible without confusing the can for a consumable. If the item needs approved, labeled, child-resistant, or secure storage, use that method instead.
What is a diversion can?
It is a commercially made container designed to look like an everyday product while holding a small item in a hidden cavity.
How do I choose the right size?
Measure the item and compare it with the exact model’s usable interior cavity. Do not rely on the exterior label or nominal volume.
Are all diversion cans the same inside?
No. Interior dimensions, closures, materials, and limits vary by product. Check the exact model or SKU.
Do diversion cans need ventilation?
Not for ordinary inert, dry items. Do not use one for contents that need ventilation or have temperature limits.
Can I store medication in a diversion can?
No. Keep medication in its proper labeled packaging and follow its storage directions.
Can I store batteries or chemicals in one?
No. A disguised container may hide labels or interfere with safe storage. Follow the item’s manufacturer guidance.
Can I hide a diversion can inside a wall or cabinet?
Do not build it into or alter a wall, ceiling, cabinet, or rated assembly. Use it intact as a portable container.
Do building codes set diversion-can dimensions?
No code sets a universal stash-can size. Codes apply to building assemblies and their contents, and requirements depend on the location and jurisdiction.
Is a diversion can secure storage?
No. It can conceal an item from casual view, but it is not a lockbox or a substitute for secure storage.
What if the maker does not list a load or temperature limit?
Treat that limit as unspecified. Do not guess; choose a product with suitable stated limits if they matter for your use.
(This article was written by one of our staff writers, Michael Donovan. Visit our Meet the Team page.)
