From junk to enrichment: Uses for a camera film canister (2005)

Fry, A., Dobbs, T.

Abstract

Any sort of useful junk can be used to make a wide variety of enrichment devices at low cost. Empty camera film cases were made into mealworm and food dispensers, hanging sof food capsules, dripping devices, ice cube makers, puzzle feeders, dry scent dispensers, rattles, unusual moving devices, etc.