Drinking! But like, really make the effort i.e. cocktails, some prosecco. That is if you drink alcohol - if not, nice mocktails even?
Cooking a three course meal in the evening, all helping out. Or if you are there for a number of nights, a come dine with me type thing where each of you cook one night.
For things to during down time - reading, binging a new/old show you all like.