Then what would I put on my shelves?
Worth a shot. I'm on staff at one convention, and helping out another. Both have quite a bit of DW programming, including trivia contests. This year, Big Finish donated several cds, and they were a huge hit.
I've heard back from a couple of the winners who had said they weren't interested in the audios before, and one is now a subscriber, the other has bought several of the "BF for a Fiver" titles.
Now I'm on the hunt for prizes for next year.