Mike, thanks for all your effort and thought to "reward" us with prizes. Depending on what you pick/receive you could always let the winner pick their prize from what you might buy or get donated. I'd be happy to donate a free registration to the IRG 3.0 (2010) for a prize and perhaps others holding gatherings elsewhere may be inclined to do likewise.
I've found that some Popular items include things with a teardrop theme...such as a Teardrop clock, mug, T-shirt, etc. lightweight and easy to haul in your tear. Other items include camping flashlights, smaller dutch ovens, and cooking accessories/cookbooks for DO.
There were so many good suggestions given, and I also like the idea of a gold star for bragging rights or a designated thread with the "winners" posted .... kind of like a Wall of Fame. One could locate winners of the design contest, messiest shop, etc. all on one thread!
Thanks again for your thoughtfulness and desire to make this thread a fun one,
Joanie