Tesla CCS Combo 2 Adapter in car holder (part number 1475211-00-C)

Simple CCS adapter holder, can be mounted in the boot using velco or there's an optional ‘clip’  model which fits (snuggly) into the main holder body. I've used the clip version to attach the holder to the edge of the carpet cutout for the main car charger socket (see pictures). I've then used 2x 3x15mm self-tapping screws through the carpet to securely attach the clip back to the main body.

The holder is quite a close fit to the CCS adapter to avoid any rattling while driving - you may need to ‘adjust’ the printed holder based on your printer tolerances/accuracy.

As the adapter is reasonably heavy I've printed this in PETG.