I've just sat down for a browse and a cuppa, having spent an hour or two PUTTING THINGS IN TINS!
Specifically modelling materials [the 'miniature objects' kind of modelling, naturellement]. I have a number of those tall ones that Italian biscuits come in, and I've found that laid horizontally they make excellent holders for longer items like beading and dowelling etc... [The wooden kind of beading, not the round necklace kind..]. gosh I wish I hadn't started this, it's so full of homonyms
I also keep buttons in a tin, and ribbons, and threads and tape, so I'm a fan. It's nice that you can buy something like a vintage tin and actually use it for something, unlike most of the stuff I buy just because I like the look of it..
I often change the buttons on new clothes, for nicer ones out of my tin. I call it buttonhacking, it can really elevate a garment.