A full-service kitchen. If I never choke down another serving of Smak Ramen noodles it'll be too soon. A cooler chest. Might as well have good food to go with that fancy kitchen set up. A self-inflating mattress.
Nothing beats a good night's sleep.
I sleep better on my Therma-rest than on the mattress at home. A pillowcase and, on warm weather trips, a sheet. Nothing beats resting your weary head on a clean pillowcase instead of filling yesterday's dirty T-shirt with your spare clothes. A small bottle of Dr. Bronners. For food storage.