Be sure to have clean carriers and well groomed animals. A grooming table and rug are a comfortable place to let folks get acquainted with the rabbit habit. Camera ready phones make a photo op for parents and kids.
Set up a slideshow on a portable device. Give demos on how to clip toenails or groom a rabbit. What really attracts people is someone spinning angora wool. Have some knitted/crocheted items out.
Tractor Supply graciously offers space for free, so be sure to clean up after yourself. No spilled shavings or wool floating around. It's a great place to network with other rabbit people. Don't abuse it! Go out and have fun talking about your favorite hobby - RABBITS!