Seriously - you need to get some friends to come visit the booth - people attract other people. If there are three or four people at your table, others will not be afraid to stop to see what's going on, and if some are buying, others will buy. Sometimes people are afraid to stop, even when they're interested, if they're going to be the only fly in the web. If I was in your neck of the woods, I'd come 'shop' and help suck people over to your display.
We used to use this tactic at craft shows after we noticed that people walking around would stop at the booth where other people were stopped. So we started visiting each other's booths and sure enough, where some are stopped, others will stop. It's like they're afraid that if they're the only ones there, the pressure to buy will be too much, but if others are there, they can stop and look it over without attracting too much attention.
