I got to thinking about how to carry multiple games around with me for my DS. Then I though, multiboot. An addon that plugs into the original port, then spans out with a flexible type thing to cover with movement of the clamshell, then along the DS top, have about 4-5 cart. slots. The thing that plugs into the original slot will have some software or something that will allow submenus when you click on "start ds game" and all the games you have in will be in there. If there is only one, then it'll boot automatically to that. Or, you could do the selection manually via a switch, like on some AV switches, but software solution would be better. Now for a very very bad photoshop of what I mean: