Tanglet - Tanglet is a single player word finding game based on Boggle.
Tux Paint - Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6).
Webfeud - Two players play in any game of Webfeud.
Lil' Picasso - Lil Picasso is a coloring and creativity package for children.
Lexica - An open source word-search game.
Painty - Kid, if you have a dream to paint the best picture in the whole world, this is the place to start...