A 3D printer is a great tool for most careers involving some kind of creativity or creative thinking.
As a hobby, I don't think there are many better and more versatile ones.
Even as a household tool it is worth buying one for the sake of being to repair and customize things as well as create artistic items that would otherwise be costly.
Customization is a key point and if you have an art background there are tons of ideas. For example you can create scaffolds for sculpting onto, decorative pieces or mathematical 3D patterns to incorporate into art pieces.