I asked my wife to get me this shirt:
...but they have a bunch more shirts, hats, buttons, and stickers over at http://www.ddpinball.com/
Also, I could never bring myself to fork out the extra *gasp* 50 cents per ball to get these Premium Ultra-Gloss Pinballs
...from Pinball Life...
http://www.pinballlife.com/index.php?p=product&id=1325
...but my wife just placed the order a couple days ago. Should make some great (albeit heavy) stocking stuffers.
Good luck with the Holiday receiving, Ryan.