Double sleeping bags are good on an air bed -comfy sleeping helps! also take extra blankets in case its cold, we put these on the car seats and sit on them so that they don't take up too much room. Yummy food, can you take an instant BBQ or have a camp fire - he can be all manly and get involved - he doesn't want to feel forgotten! Plenty of clothes - and spare pairs of warm socks are useful when its cold, or if your groundsheet leaks like ours did! A box of wine is handy - easier than bottles, and chocolate helps my DH too! Hope you all have a lovely time.