This is a flush mounted cable feed through designed to be used with LILLHULT cables, but I'm sure it will work with other cables with similar diameter as well.

It contains an outer bus piece that can be glued inside the drilled hole (I drilled mine with a forstner bit).

Then the inner piece is slightly conical making it snap in place.

I assempbled the inner and outer part, glued it in place flush with the surface and then removed the inner piece and fed the cables through.

I used this together with the Baseus Charger mount which I've also shared.