Judging by last years event the one thing everyone will want is somewhere to sit and relax, especially with it being over two days. So I think the Chairs and tea urn are a great idea.
So my proposal is Chairs, the comfier the better!, Tea / Coffee, A table for coiling / wicking / running repairs, and battery charging facilities.
There should probably be some kind of computer station too, preferably to showcase the forum and get folks to sign up and / or make posts...
Lot's of other fabulous ideas being posted too but I think the basics would cover it...
Ooohhhh yeah, try and get us near the beer tent!