Suggestions for a very special/unique anniversairy gift (for Him) ?

You say you've done candle light dinners...but have you done one that included a romantic hot air balloon ride first?? I don't know where you live, or if there available there...but I've seen them here and they look awesome!! Or a dinner train...we have one that runs up to the wine country and back. It sounds like you've done just about everything...now you get to do everything over again, but with a different twist...lol. Good Luck!