Review on Multipurpose 30-Piece Plastic Film Canister Holder - Ideal Storage Containers for Small Accessories, Film, Beads, Keys, Coins (White) by Craig Sexton

I've seen some bad reviews about using it for the film canister rocket experiment but trying to save money. None of the canisters worked, some of them were less than 1 foot high. I've used my old but genuine film canisters which are 20+ years old, they work great (fly 20-35ft up) but they're old and won't break/seal so I tried these as a spare. Unfortunately I haven't found a suitable replacement yet. SAD TEACHER.