From Six Points Music Festival artist Jonny B, who also works for Guitar Center:

At each Six Points Festival Event there will be a stack of Thank You Cards from Guitar Center - saying "Thank You for Supporting the ArlingtonMusicScene.com" - on the back of the card is a free gift when you spend $15 or more (It's for strings, cable, etc). These cards are good at any Guitar Center, but if you come to me, and let me know you got it at a Six Points Festival show, I'll hook you up especially!

Jonny B works at the Rockville, Maryland Guitar Center.