Here is one interesting project by Senocular - it is an editor of personalized avatar characters much like Nintendo Wii ones. Howevere, besides online version, author is offering desktop AIR app version to play with. You can export your avatar image to JPG or PNG.
Source code is also available from Google Code, MIT License, (I don't see any ads on websites nether!) and you will need Adobe Flash CS4 or later to use the code. Or later?! :)