I, along with other etsy artists, have artwork that once sold will be donated to Japan's relief funds. I've sold one thing so far and have given the profits to World Vision. If interested in knowing more about helping through art whether it is buying or donating, then go to this forum.

http://www.etsy.com/teams/8446/artist-
aid/discuss/

There is also info on where you can find good legit charities to donate on your own!