This "fixed (no rotation) extension cord multiconnect holder" lets you fix the outlet of an extension cord to your multiboard via 2 multiconnect part.
You can print it out of a rigid material like PLA or use something with more flex like ABS, PETG or ABS-like Resin (see foto for a Resin print of the rotate-version).
If you prefer a version which can rotate, you can find it here: https://www.printables.com/model/913825-rotate-version-extension-cord-multiconnect-holder
The author marked this model as their own original creation.