Design your own "Tag" on Graffiti Creator
http://www.graffiticreator.net/
https://www.moma.org/learn/kids_families/index
Make your own Minecraft like character.
http://makepixelart.com/free/
Create your own self- portrait in the style of Picasso's Cubism.
http://www.picassohead.com/
http://marvelkids.marvel.com/activities
http://www.kidsites.com/sites-edu/art.htm
http://gws.ala.org/category/arts/arts