This literally took me a couple of hours to finish, in a single evening, while taking care of my two little girls. This has been the easiest build so far, and I'm very happy with the final result.
These first two pictures show the most work to be done involving the Circuit Sword Lite, besides the work on the case itself.
Soldering the Raspberry Pi Zero W to the board
Soldering the back L1/L2 /R1/R2 trigger buttons by HoolyHoo to the back of the case
Final result
Back of case
Thanks: Kite, Rodocop, HoolyHoo, YaYa, and the Sudomod community