Ferris Sweep 2.2 (https://github.com/davidphilipbarr/Sweep) case with cutouts for the switches. Remixed from the excellent design by Knifa. Added cutouts for the USB ports on the nice nanos as well as added a chamfer to improve the printability.
Designed for TPU, but can likely be printed to support a harder plastic if scaled a touch.
I recommend putting silicone feet on the bottom for grip. I printed mine with 85a TPU and it's working great.
The author remixed this model.