The most common places to sleep with extra guests are on a sofa, futon, air mattress, or blow-up mattress. However, there are other options as well. For example, some people use an RV or camper when they have extra guests. Others might put the extra guests in a spare room or basement if they have one available. If you live in a small space, you can also try sleeping in shifts so that everyone has a chance to sleep comfortably.