Ah......Now the fun begins.
fandj, I LOVE your ideas and implementations....Nice work! Thank you for sharing them. You have the wheels spinning inside my head for such a shelf in our bedroom on the wall with the thermostat.
BTW, Did you find the 12V outlet in the cabinet above the passenger? Unless Phoenix recently deleted it, you should have one there.
FWIW, I addressed our gadget charging needs by adding a shelf in that same cabinet along with a power strip with the outlets positioned at different orientations for all styles of 110V chargers. I store my 17" laptop on a foam pad in the upper shelf. When driving with the inverter on, on shore power, or generator running, everything gets charged up. It is nice to close the door and the house being free of such wire.
Yet I do like the in-bed convenience your 12V outlets offer.
Here is what I had done. My original plan was to follow up with a 3-gang 12V power strip, but the need never surfaced.