We're having some work done on our yard, including new grass. I was hoping it would be done in time for my daughter's birthday party, but instead half the yard will be covered with dirt! The other half is a wooden deck. Now I don't really think we can keep 30+ kids inside the whole time, so do you all have any ideas on how to cover the dirt so the kids don't trek it in? It's a big irregularly shaped patch. since it's just for one day, we don't want to spend a lot. I wonder if rental places would have something..