What stuff should we have/not have during the show.  

What can we do/bring/show while folks are waiting in line?

Bridge demolitions?

Ya'll know about my comment box thang.

Music?

Love,
Jenny the procrastinator.

No music.  In my opinion.  The cafeteria is going to be loud anyway, so adding music to the mix may make it difficult to hear inside.  Maybe?  I've never been inside, so I'm not sure.
To have:
Science Club poster board thing.  Sign up sheet, date and time of our next meeting, and what we're doing.  Bridge demo stuff definitely.  Other than that I'm stumped.