This site has loads of activities that not only spark creativity but could easily support standards based instruction in mathematics, reading, and who knows what else?
TuxPaint is a free, award-winning drawing program for children ages 3 to 12. It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. Kids are presented with a blank canvas and a variety of drawing tools to help them be creative.