Iceberger - Draw an iceberg and see how it will float
Stickman Builder - Free parametric graphic Stickman Builder, creates fascinating stick figures on the fly.
Sketch This - Daily drawing challenges
TryDraw - Improve your line art and observational skills with our tool that highlights your mistakes.
Clipnote Studio - PC alternative to Nintendo's now defunct animation software, Flipnote studio
Letter Generator - Write an entire letter in less than a minute!