Here are a few ideas that we have:
- Learn to sail (preferably someplace scenic)
- Learn to dance (fun but intensive)
- A bike tour in Switzerland (self-guided)
- A multi-city European tour (self-guided)
Right now, learning to sail seems the most likely. I've got a good budget for the trip (as I've not taken a vacation in years), and am willing to spend a little to learn alot.
I'd be happy with much do-little-or-nothing time, but that's me. :P