I've got a Check Game cheque, a couple of ˝ Off boxes, a 3 of Clubs from McHale Card Sharks, along with other posters, question cards, and promotional ephemera from years gone by. Plus a decent-sized board game collection.
I'm pretty well on my way to a fully-decorated office space. The icing on the cake would be replicating the CBS "eye" curtains from Studio 33.