Here are some FREE online drawing and image editing tools...

Aviary Education in Google Apps for Education FREEhttps://www.google.com/enterprise/marketplace/viewListing?productListingId=3442+15105250666671696895

ArtPad http://artpad.art.com/artpad/painter/

*Pixlr - easy to use...http://pixlr.com


SumoPaint - there is a FREE version or Lifetime license for web $9 or full desktop version for lifetime $19
http://www.sumopaint.com/www/


Fotoflexerhttp://fotoflexer.com