I had the panel facade of my 172 begin to deteriorate and during the effort to replace it, I came to realize that nobody sells the golf tee-looking pins that affix the facade to the underlying structure.
This pin is a reproduction of that to be installed as an owner produced part.
It has not gone through sufficient testing (and I haven't installed it on the aircraft yet), but it's non-structural and I expect it to be airworthy. Based on preliminary testing, it is recommended to be printed horizontally (with support) for structural integrity.
Update June 2022: Created longer variants due to a deeper facade in my new panel.