http://www.guitarshow.com
You have live acts performing, so try those stage photography skills out (though the venue tends to be a bit brighter than at a club). You can do some microphotography work-just ask the dealer/seller on some fine vintage work. A lot of people watching-all types from that MetalHead with Tats from Head to Toe to the Spanish Style Acoustic Players to the Good Old Boy who bought this Fender as a kid in the 60's and has decided to see what it is worth.
All sorts of products to shoot pics of too!