I was especially thinking stickers with our be-flagged logo on them, since it's basically a circle. Those would probably be pretty easy and cheap to print up. And I know that stuff with the ace pride colors tends to sell really well; a friend of mine who does chain mail got some very enthusiastic customers at his booth at our local Pride after I showed him some other flag color combinations, including an absolutely over-the-moon ace person or two. He's also willing to make up some little charms on the spot if you don't see your flag, and has a sign to that effect prominently displayed for his customers.

But yeah, business cards with the logo plus some generic queer-friendly message would probably be very well accepted as well. I'm honestly thinking of emailing the person I originally sent the rainbow logo to with some of this information, if only because I do know a thing or two about the queer market. I'll probably double-check the websites of the groups who are visiting first, just to try and suss out their potential audiences and whether said audiences would be interested themselves, but it's certainly worth a shot!