Aw, that's cute, hot airballooning. Hm... You can go scuba diving? I dunno. That's how my friend said he was proposing to his girlfriend. Haha. He said that he was going to put the ring in a clam, lol.
Anyhow, ideas... Hm... My friend (not the one that's proposing) says you should go on a cruise, haha. That's a bit expensive though (not that hot airballooning isn't...). Uh. Just don't forget the motion sickness pills.
Aw or if you like travelling AND photography, you can take a week trip to like China or something.