what to do with film containers?

[tyrsalvia.livejournal.com]

I've been doing a lot of photography stuff lately, so I have something like 20-40 film containers laying around. I keep thinking I should do some kind of creative project with them, but I'm really not sure what. Any ideas? (These are the little plastic things film comes in, mostly translucent white containers with yellow and black caps, but I also have some black containers with grey lids and black containers with black lids.)