When I'm by myself in public I like to assume the role of flaneur...I'm not *just* sitting in a cafe drinking coffee, I'm observing & musing & making assumptions about the philosophies of modern day life...it makes people-watching so powerful...
Also love going to a matinee movie (if you're taking the day off, which you should if you can!)
Also can't speak highly enough of a good nature trail/walk. Trying singing/humming to yourself while you're on it, and counting how many different kinds of birds you can spot β£οΈ Congrats on 29 trips around the sun!