Since i've tried a couple of shopping cart keys but none of them seemed to be the right fit in some shops i visited, i decided to create my own version in OpenScad.

I've added the models i've created below but just use the OpenScad file in order to adjust to your own needs.

For me the 2euro variant works in all shops I visit.

Parameters:

• L_Handle: The size of the handle
• D_Keyhole: The diameter of the keyhole
• ShoppingCartKey
  • d = Diameter of the coin
  • t = Thickness of the coin
  • text = Text to place on the handle

Print settings:

• 100% infill
• Nobrim