I wanted to take a sign or something to Columbus this weekend... here's what I came up with.
Here's a jpeg of the Charlie cut-out in case you want to make your own.
I printed them on a thick card stock and taped a Lowe's paint stir to the back. If you only have regular paper, you'll probably want to paste/tape the printout onto something a little more sturdy.
I ended up making a few for the trip... keep an eye out.