The projector's going to display a starfield and we're going to rearrange the furniture and make that room into the bridge. We'll be taping garbage bags to every window to totally black them out - since we're playing all day Saturday and don't want sunlight getting through.
I've found a neat screensaver that looks like a Star Trek systems console, and I want to have that going on the computers in the house. One of the things we might want to try and make cheaply are other fake control panels to put on desks or walls on on the bridge so people have props to fiddle with.
We've come a long way, baby.