I also like Altoids tins. I had my mom tell the people she works for to save the tins for me, and a week or so later I was getting overrun with tons of tins. I glued foam into many of them, and kept some just as tins.

It's great, Because a tin of altoids takes me like a month or two to finish.

The only real issue I find with the altoids boxes is that they are a little cramped for finger room to get a specific fly out, if you have 'em stuffed with flies.