Remix of the pegboard holder that didn't quite fit my multiboard wall due to the pegs being too small. Remixed it to use the Multiconnect system so it should work with anything that supports that connector type.
The model is symmetric so you can just print 2.
Printed with 3 walls in the upright configuration to reduce supports (and cleanout) needed in the slot, though doing it on it's side might be a little stronger - it feels sturdy enough for me (though YMMV). If you're concerned, I recommend printing just one to test it yourself.
Remixed in Tinkercad.
More info on Multiconnect: https://www.printables.com/model/1074671-multiconnect-generic-connector-for-multiboard-v2
The author remixed this model.
Removed the pegboard pegs from the Pegboard mount (which were not deep enough to be multiboard compatible) and replaced them with a multiconnect slot instead for mounting on my multiboard.