Save the World Tees PLEASE HELP!?

You could call me an activist but I am looking for tees (preferably under $25) that donate to causes or have messages that raise awareness. I like the 'voting' tees but (tele me otherwise) i am not sure if they are appropriate seeing as I cannot vote. THis is the kind of thing I am looking for: a href="http://store.delias.com/item.do?itemID=49370" rel="nofollow"http://store.delias.com/item.do?itemID=4…/a or a href="http://www.gap.com/browse/product.do?cid=20862&pid=417582&scid=417582002" rel="nofollow"http://www.gap.com/browse/product.do?cid…/a