I needed to hang stuff on a door, but found that other options weren't offset, so I made my own. This has the offsets inset into the bracket, so they will be flush with other 12.5mm offsets that are not on the hanger.

There's a version for 35mm doors and 40mm doors. I suggest printing it on its side to align the layers for maximum strength in tension. I used Auto Tree supports, which left only small nubs on bottom edges of the snaps to shave off. PCTG is the material I chose for this due to its strong tensile strength and elasticity. Even with a load that is over what it should be PCTG usually stretches as a warning rather than breaking.

Here's the onshape project with parametric values to adjust all of the sizes, like door thickness and tolerances: https://cad.onshape.com/documents/3fad17e6cec513cf4614dd9a/w/921382fa5b275e45eb6bfd3b/e/68e2a02b55bbf4d8a7c4cfaa