For those of us with phones that don't support wireless charging, we rely on USB-C cables. Tesla's phone tray does not really accommodate plugged in phones so this model creates the needed space to be able to use the space while charging.

Simply print and press-fit into the bottom of the tray area - it should fit snuggly. I drive like a maniac and have not had my phone fly out of the cradle (yet).

I recommend printing in ASA, ABS, PETG or any other filament that could withstand potential higher temps.