That's what I do for loose GB and GBC carts. GB in the plastic shells are in a nice little green box (my mom works at a greenhouse/nursery with a somewhat high-end gift department, so I end up with tons of fancy gift boxes in all sorts of small sizes). GBA games I keep in a Q-tips vanity box. For some reason, I just like those little plastic tubs: http://www.globalpackagegallery.com/...e/other/qtips/