Here is a small thing I picked up a LONG while ago when I found myself getting the odd hit from the Something Awful forums - they were running a thread where people made up their own cheque designs, and a goon by the name of smilingkeven submitted this design. Neat! Not that you could write on it.
A number of you may have come here after reading the article about HTDTE on page 23 of the July 2005 issue of Astronomy Now magazine. It was spotted by a physicist friend of mine. I bought a copy and scanned it, here.