Glucose containers that hold test strips would work just as well as 35 mm film canisters. They would also be good for holding those pins or needles you need to dispose of when dull or broken. Just puncture a hold in the lids which are attached to the canister.

Look for a small plastic salt/pepper shaker (tall enough to hold spools of thread) and use as a thread dispenser

use small empty prescription bottles. They are about the same size.

I am a diabetic. My test strips come in a cannister similar in size to the 35mm film cannister. If someone wants some, contact a diabetic friend.

I use empty pill bottles. They come in 2 sizes. I use them not only as thread dispenser but also to hold old sewing and sewing machine needles. bobbins ans some other uses.

I've seen a bobbin put into an old dental floss container so it even cuts it for you!

I use prescription pill bottles after I have taken all my meds. I use them for everything from holding needles, threads, thimbles etc. They are great... especially the newer ones they have now with the hinge tops.

How about pill containers! They are usually somewhat clear and can have a locking or unlocking lid. I use them for needles, too, and for project buttons.

Instead of a 35 mm canister, a lot of diabetics use strips to check their sugar, and thos containers are equal to a film dispenser...find a diabetic and take some of thos containers off their hands and out of the landfills.