Anything Goes : Festival Materials For Screenwriters by Sean LaFollette

So I have a screenplay that was accepted to the Beverly Hills Film Festival this year and I recently received an email containing some additional information. One thing they stated was that you can bring material on the day of registration for their display table. This is something I never really thought about. Does anyone know what I should be providing as a screenwriter? Everything I read so far says I should bring postcards. Any other thoughts?