It took me a few iterations to arrive at this design - Squid Jig Holder Sheathed.
It's a tool for holding Squid Jigs, which have many sharp points, which can easily catch, scratch and puncture snorkeling and diving equipment.
The idea is to slide the pointy bits through the big loop, and then down into the sheathed holder. Gravity holds the Squid Jig in the holder, and you can collect many Squid Jigs safely.
I have printed these in PLA, and they have lasted a couple of years of scuba diving.
There are two sizes, choose the appropriate size, depending on how many Squid Jigs you will pick up.
20-Aug-2024: Added a third size - same as the "LongerTaller" version, but with a thicker loop.
The author marked this model as their own original creation.