How should I give out two Free Maker Faire Bay Area tickets?

Geek Chic @ Maker FaireGeek Chic @ Maker Faire

After we already bought weekend passes for the Maker Faire Bay Area, I happened to have been given an two day pass tickets. (( Photo Credit: Steve Jurvetson via Compfight))

Now, what is the best way to give these out?  I think I’d like to do a design challenge, but I haven’t decided.  Do you have any suggestions?