Did vacuum moulding and injection moulding at local makerspace. Vacuum moulding with HDPE plastic (milk bottle), heated till it's transparent (and very stretchable) and thrown over the target object (Nokia N900 stylus melted slightly, at the tip, but still works).

They do not have a good 3D scanner, though - and I should go through 3D printing induction (they changed 3D printers, again).