3d printing. I started out with a cheapish Chinese model, got annoyed by the lack of accuracy and bought a Prusa.
Then there’s the filaments, accessories, post processing stuff… I own a Dremel now for some reason!
And I’m constantly eyeing those resin 3d printers, telling myself the higher resolution is totally worth it…
The only thing saving my bank account is my low attention span and dozens of other interests :)