Bought a 3d printer(Creality Ender 3, sub 200USD). Being able to print nice prints takes a lot of time and you'll learn a lot during the process.

After being able to print I tried drawing. Both blender and fusion 360. Blender for organic objects and fusion 360 for practical engineering objects.

It's a really fantastic hobby and you'll be able to produce a lot of physical objects instead of only writing software.