I had these very tiny hooks in my bathroom to hang towels on but I grew tired of picking up my clean towels from the floor every morning.
It's a very simple model you can print upside down without supports in a matter of hours. If you make a few overnight you can go straight to the bathroom, pick up everything that fell to the floor and hang them on these holders instead, they pop right on and, much like Rick Astley, will never let you (or your fresh laundry) down.
The author hasn't provided the model origin yet.