Improved case for the NanoVNA v2. Changes from @corecode's case:
-Lip around the case for sealing the 2 pieces together
-Straight screw holes for sinking the screws
-Holes for lights
-Place for adding a lanyard loop (or string for the pen)

After bad experiences with cheap clones, I ordered this genuine NanoVNA v2:
https://s.click.aliexpress.com/e/_dSfuJ3t

Battery:
https://s.click.aliexpress.com/e/_dUXxoUL

Requires 8x M3 12 mm screws:
https://s.click.aliexpress.com/e/_dZTdo1D

Button head screws also look good.