Comment by surgical_fire

If you don't care for software development, I would suggest you to try your hand at self hosting. I am having a ton of fun with it.

It's easy and fairly cheap to get started. I bought a refurbished Dell Optiplex to be a home server, and I am getting a lot of mileage out of it.

There's all sort of applications you can self host nowadays, it's highly cuatomizable, and can be extremely useful on top of it.

If you have an old computer lying around unused you can even try turning it into a home server to see if it suits your tastes.

At least for me was something highly addictive.