Cremejar holder

This device is for clamping on a shelf and containing a cremejar or similar. It helps with opening the jar with only one hand.
The shelf should be between 11mm and 13mm, although it could be adjusted, as the clamp needs to be glued in (see picture 3, the green bit)
You may want to enable support on the clamp to ensure proper printing and turn the clamp to the side (as in the STL)
If the clamp is slippery, you may want to add rubber feet or a non-slip-mat.

I printed it in PLA, but you may want to use PETG, as it is a bit more flexible.