I do alot of 3d printing and started out with cheap £99 but satisfactory 3d printer and have worked up to a not expensive £550 printer, which I use mainly for bespoke control box housings for various projects I do with Arduino and also active on github in the prgramming section. There’s also many 3d printing projects where users share their projects and include the various codings to make such things and are searchable .
Whils’t perhaps not has customisable as the above, it is equally impressive.
https://www.printables.com/model/126646-one-handed-dualshock-4/files