This is a key organizer.
It's simple to print and assembly.
I printed with 0.2mm layer height, PLA or ABS, whatever.
You will need:
(2) 5mm allen screw with countersunk head
(2) 5mm nyloc nut.
Use the spacer in between the parts and the keys, it will make the keys move smoothly.
I uploaded a version 2 of the nut part so you can decide which one do you prefer to put your key ring.
Hope you like and any other opinions is welcome.