Alone movies are great. I used to go catch cheap matinees next door if I got out of work early. Accidentally caught a premiere of Mamma Mia 2 that way with a bunch of old ladies who laughed and cheered the whole time, it was awesome.
For some ideas, here's some new stuff I've tried this year so far. Last week, I visited a local museum. This week, I tried a new climbing gym. Next week I'm going to see a band I don't really know, with a friend. The week after that is a mystery... but I've been wanting to try a sauna...