Miniture Painting
A personal hobby of mine is painting plastic miniatures, more commonly called minis. I paint a variety of minis, but my favorite to paint is my army of Imperial Knights from the strategic tabletop war game, Warhammer 40k
Warhammer minis come disassembled connected to a sheet of plastic sprues, you then follow instructions on how to assemble the mini, typically using glue. As for the painting step, its entirely up to the owner to decide how they want it to look.
I have heavily modified my minis, magnetizing the arms to allow for different weapon options, as well as the face plate and pilot hatch to allow for customization.