Best hidden gem activities in Tokyo? - not food related

Planning a trip to Tokyo and wanting to visit areas like ueno, asakusa, ebisu, etc.

What are some of the best places to wander around for unplanned activities, or activities I could plan in those areas that might not show up on “top 5 things to do in Tokyo” travel sites?

Open to a lot. Enjoy art, architecture, zoos, Shopping in malls is fun, shows/performances to watch, I also enjoy athletic or interactive/hands on experiences where we’re actually doing something and not just observing (crafts or obstacle courses maybe idk).