How can I show my appreciation to my fiance for all the wedding planning help?

After we got engaged, me and my fiance resolved to save the money we would have spent on a huge lavish wedding to put a down payment on a house after we're married. We agreed to have a small wedding, and keep everything in the family rather than hiring over-priced vendors. This means A LOT of work I thought I'd have to do all by myself. My friends who have or are getting married have gotten barely any help from their fiance's, and it was like pulling teeth to even get one suggestion out of them, so I kind of umed it would be on me to get this planned. But he's been surprisingly helpful in the whole process, and has really stepped up to the plate with being involved in everything :-). He helped pick out the stationary stuff ( green save the date cards and red envelopes for our cream color invitations were not exactly what I had in mind, but I love that he was so happy to help choose them :-p), volunteered to grow me sunflowers for my bouquet, and has really helped by making reservations at a B&B for our wedding night and reserving the veranda at the lake we're holding our wedding at, since I work during the day and wouldn't have had time (he works nights). He even went out and picked me out a super nice calligraphy kit, so I could learn how to do it properly for our invitations (his handwriting is comparable to hieroglyphics, so I'm unquestionably in charge of the actual calligraphy). I'm just so amazed and happy he's so involved and doing all sorts of things without me having to ask. What something little I can do to repay him for all his help? I know it's "his wedding too", and he should be involved anyways bla bla bla, but the truth is, not many guys seem to take this stance and leave it all up to the woman. I just want to make sure he knows how much I appreciate everything.