Maybe take him out for the day, as said before picnic, then maybe a film - his choice, do things he likes doing just sorta pamper him as much as you can pamper a man for the day. I am sure he doesnt expect anything for what he has done as he obviously cares about you a great deal and wants to help you out. But I am sure you know that. He sounds like a great guy. Or do the things above but stay in, rent a couple of dvds, cook him dinner, give him a massage etc... Its inexpensive and its good for the both of you.