Several years ago, ameriDroid designed a camera case for the Raspberry Pi 4B. As the Nova is built on the same form factor, we wanted to see how it would fit.
We printed up this case using clear resin on our 8K resin printer at 26 micron resolution. As you can see, the Nova fits perfectly.
Many Raspberry Pi 4B cases should work well with the Nova. Some cases may need the opening for the Nova's USB-C Display Port widened just a touch, but that should be the extent of modifications necessary.