Coin Holder for BMW i3 to hold 10p 20p 50p £1 coins for car parking money. Separate lid (optional) to hide coins from view. Coin holder fits under the central arm rest and is stuck on with double sided foam tape (curved back almost (but not quite) perfectly matches curvature of car but probable needs foam tape).
0.2mm (but could be larger)
Print lid upside down for smooth top