Some of you may have already stumbled upon this, but I was thrilled to find out about this tool today, sponsored by John McCain's campaign. Here are two of the campaign posters I created:

If any of you create posters of your own, please post a link in the comments for everyone to check out.

(H/T: Townhall.com community blogger, AndrewS)

Update: This has been cross-posted at KatieFavazza.com.