Summary

This is a pegboard substitute. That is, it allows you to use some standard peg board items on almost any surface without needing a pegboard. You can mount a single item or many. Shown is several mounted above my garage door close to the ceiling where it would be impossible to install on a regular pegboard (without installing first and then mounting the board). Just turn 90º then mount then turn back. They work with both 1/4 and 1/8 inch items.

I printed these using PLA and they seem plenty strong, especially for light duty, but I am concerned that if holding something very heavy one may need a stronger material. The other issue is over time PLA may creep so another material may be better suited.