This 30-pack of clear film canisters are great for a wide variety of applications other than storing 35mm film. Store beads, coins, needles, pins, seeds, batteries, and other small parts you'd want to easily stow away in a drawer or carry with you in your purse. Each container comes with a micro-precision, tight sealing lid to keep its contents secure. These cylindrical capsules are also the perfect supplies to build film canister rockets for science class. Fill each canister with a little water, drop in effervescent tablets, snap the lids shut, and watch the experiment take effect through the clear plastic casing!