Leapster by Leap Frog. Recommended for ages 4-8 (We're a year early) this game is intended to help teach colors, shapes, numbers and letters for the pre-k group and grows with them through different games and advanced levels. We included the Disney Princess game.
PP now has her own hand-held game. She has rarely been seen without it. With features like drawing, sing-a-long songs and touch scree fireworks, she is entertained, working on improving hand/eye coordination, and the fighting over the DS has ceased...and it's pink and purple, what more could a Princess ask for?