- Take an improv class. It's excellent for building confidence, meeting new people, learning social skills, practicing creativity, being funnier, and generally having a really fun evening once or twice per week.

- Writing posts or making video tutorials is really great. Can be profitable, lead to professional growth, but also it's a great hobby and a fun way to create some value. Even if you don't become a successful/professional blogger/youtuber, it feels awesome to record a tutorial, see the views go up, and receive comments from people who found your video helpful. Also it develops writing/speaking skills, motivates you to learn the topic in more depth, clarifies your thoughts and understanding, gives you valuable feedback from more experienced people, grows your audience.

- Gamedev and Computer Graphics are REALLY fun to do. For people here I recommend Godot and Houdini, it's incredibly interesting, entertaining, and satisfying.

Here's a quick tutorial that I've made on procedurally generating a pretty landscape with Houdini:

https://youtube.com/watch?v=o3mbIRZhv20