I’ll try to make a short (for me) list here.
Learn to play the bagpipes.
Learn to play the banjo (at least I own one of these).
Spend 1 to 6 months in England and Scotland and Ireland.
Take a cross country tour of the U.S. in one of those giant motor homes like This One while stopping at National Parks, thrift stores, and finding regional vegetarian food.
Start painting landscapes.
Spend a week in a lovely cabin in the snow like This One
Camp at Yosemite.
Visit the Grand Canyon.
Visit the set of Doc Martin while Martin Clunes is doing a scene.
Take a train trip across across Canada
Ice skate on a frozen lake or pond.
Make a tasty, but labor intensive Mole (only without the lard or chicken broth. I’d sub vegetable oil and veggie broth).