I use Cigar Boxes. The local Grocery store sells cigars, and they toss out the old boxes (they stack them by the register for people to take) so I usually grab a few whenever I'm there. you can take lids of and the stickers. I usually put random stickers I acquire on them, so they look a little more video-gamie. They're small and usually not really high so the carts usually pop up over the top so you can see some of the label. I leave them a little loose so you can thumb through them like a rolodex. This is what I do for GB, GBC, and GBA. DS and 3DS get put in cases.