Thanks gals for all the suggestions. Good idea about having somewhere for them to sleep, though I think most of them will just want to play, play, play. Albeit the babies will have port-a-cots as there's obviously no way they'll want to stay awake K-Mart had some craft boxes with oodles of craft stuff for $15, so I might pick up a couple of those as well, I imagine the girls might be interested in the craft while the boys just bash around (at least my boys don't do craft when at home).