Swimming in Scrooge McDuck's money bin or touring WDW comes to mind, but I'm betting you mean more time only and not more financial resources!
I worked out with martial arts regularly before having kids and that would be nice to return to.
I enjoy participating in an occassional community theatre production or work as a film extra but can't do it as much as I would like due to time constraints!
How 'bout the rest of y'all?