I've been spending a lot of time finding ways to make my printer quieter. The PSU fan comes on regularly (supposedly whenever a specific part of it reaches 50°C), and the original one is really loud due to being barely 60mm with not a lot of depth. A quick sketch of the original cover and an hour later, I had a newer, quieter cover.
This project was inspired by a similar part made for a different model of power supply for the Ender 3 and size of fan.
The author marked this model as their own original creation.