Let me clarify, I am going on a long road trip in the next few weeks, and am looking for a few new gba/ds games to entertaim myself. I might have some sugested games already though

Can't go wrong with Super Mario 64 DS. Along the same vein there's New Super Mario Brothers (or whatever it's called), or Yoshi's Island DS.

There's also the immortal Tetris DS. Or perhaps going for a game like Chrono Trigger DS, or Final Fantasy 3 might be better.

Brain Training as well is fun(ish) and personally I'm a fan of the Phoenix Wright Ace Attorney games

pokemans!

Cardgame beat me to it. Well beside Pokemon, StarFox Command is a good game too.

Cant go wrong with Pokemon,and ill check the others out