This clip-together Pi-4 case requires no screws and comes with an external mounting bracket if you need it.
It’s designed to be used either with no fan or with a 40mm cooling fan. The fan just clips in – once again, no screws required. As an aside, I’ve found that running the 5 volt fan from a 3.3 volt GPIO pin created enough airflow to keep the CPU cool while running almost silent.
If you have some clear 1.75mm filament, you can add a couple of light pipes to extend the LED’s to the outside of the case.
The author hasn't provided the model origin yet.