...He was behind the sofa the whole time.
How can you pass up an eBay gem like this one? Think of all the fun you could have baiting the fundies in your neighbourhood. Of course, that is making the assumption that they can read.
I FOUND JESUS behind sofa button badge pin - eBay, 27th December 2003 (via Hogblog).

Personally, I like this bumper sticker:
(Clicky-click.)