For me, I would travel a lot. I'd probably have a second house in Southern Germany, a place that I miss more than I can express. I'd buy Australian yarn in Australia, Peruvian yarn in Peru. I'd go everywhere from north to south, from east to west. I go where the music is, catching all my favorite bands and singers. I'd have a massage every week. I'd take classes in all the things that interest me, from making pysanka to cooking Italian food to photography to playing slide guitar.
If I had a number one wish, I'd learn to play like Derek Trucks. If I could achieve even 10% of his abilities, I'd be a happy person. Check out this video from 3 years ago. If you fast forward to 10:24, you'll see what I mean (even better if you enlarge to full screen mode). I find it difficult to take my eyes off his hands and fingers on the strings.
I'd love to hear what you would do. If you blog about it, let me know. Pass it on.....!