Hi Steven -
I also wanted to point out that the v3 (but not pico) is the same footprint as the V2+, so some of these 3D printable projects should also work with v3:
Mount: 3D printed mount ($2 on Tindie)
Enclosure: prusaprinters.org/prints/7322-pixelblaze-caseenclosure
And in case someone’s looking for a basic enclosure (not 3D printable), I recently fit a v3, sensor expansion, and buck converter in this 4" x 2.7" x 2" enclosure on Amazon.