There is a real shortage of Obama signs and stickers. Its time to print your own. Here are some sites with materials that you can download for free and print yourself.
http://tomwfox.wordpress.com/...
http://www.changethethought.com/...
http://rebootwashington.org/...
Here's downloads to make your own tshirts by using an iron on, and make stickers by printing the logo on sticker back paper.
http://plushgraphics.com/...
And here is the funniest bumper sticker I have ever seen:
http://i9.photobucket.com/...