A cache container can be any container, however some are more suitable than others.
Some common containers:
- Plastic lunch or food storage boxes, e.g. Sistema container.
- 35m film containers.
- Ex-military metal Ammunition boxes.
- Small plastic tool boxes.
- Pill containers.
- Magnetic key holders.
- Old torches.
- Old washed pool chemical containers.
- Old paint cans.
The most popular container is the plastic food storage box, followed by ammunition boxes.
A container of should be of sufficient size to hold a log book, writing implement and a few swaps. The container can be left natural or painted to help it blend in with the surroundings.
If you intend putting a cache in an area frequented by animals, a metal container will last longer as animals can't chew holes in it. Also see Vermin proofing. Empty tins such as paint tins have been used, although these may rust and the finder may not have a suitable opening tool to hand.
The main thing is to ensure the lid is tight fitting and watertight. Lose fitting lids eventually lead to wet and mouldy contents.