A tarp has a few possible uses in camp. It can be used to sit on and play on while socializing in camp. It can be used for shade if you pair it with some rope and tie it up to a few trees. It can also be used like a front porch in front of your tent. It’s nice to have a place to take off shoes and set things down before you unzip doors and enter. It also can be used as a clean surface to roll up and pack your tent at the end of the trip.