When I worked for the big game company, I got to chose what my business cards title. It said: "Hi! I'm shy!"

I used to put that on name tags as well. People would always be willing to talk to me :)

You might make yourself a permanent sign with its own 'stand' on the back. Laminated or mounted on Foamcor or perhaps a heavy card stock. Then you would never have to make one at the last minute. Make it so you can fit it inside a hardback book or in your 'display' kit, so you will always be able to carry it protected.

And candy is good bait; it usually works with anyone! *applause*