You can pick up the first gen 3DS pretty cheap now, check even craigslist as people are now unloading their gen 1s or just regretting getting a 2DS (It happens) and you can swoop in and get one cheap.
As for games? Depends what you like but there is plenty. Fire Emblem, Animal Crossing, Legend of Zelda Link Between Two Worlds, Pokemon X/Y, Super Mario Land 3D and heck Smash Bros is around the corner. All different walks of life, all great games
Also since you commute, you can enjoy the fun of Street Passes and it's little mini games, it's not cutting edge, but it's something to do.