Open Peeps - A hand-drawn illustration library.
Drawasaurus - Drawasaurus is an online drawing & guessing game you can play with friends or strangers.
skribbl - Word guessing based on drawing.
LetsDraw.It - Guess and Draw, Drawing Battle, Pictionary, Copy picture - online drawing games where you can compare your skill with others.
Fontself Maker for Photoshop - Turn any lettering into color & vector fonts
The Dot. - Prototype easy and fast with ready-to-go wireframe UI pack