I couldn't find a USB-C plug strain-relief that I liked so I used my scan of a squeaky toy, created a model of the plug, then worked to design a model that could be printed without supports, assuming your printer can handle a small bridged roof.

I used ZYLtech 95a TPU for the red, Sainsmart blue and green glow in the dark 95a TPU.

I printed this with 2 walls, 5% infill, with 0.2mm layers using a 0.4mm Diamondback nozzle.