My trailer ended up with two areas where I have the charger ports for all of these devices. I have a 600WATT PSW INVERTER than runs off my battery system that has two 120VAC ports for extension cords.
I run one cord to the home entertainment area and the other cord to the bedroom area.
These two 120VAC locations are always HOT being supplied by the always ON inverter setup.
I use multiple tap receptacles on the ends of thee two extension cords and all you see here is a 8 tap 120VAC Electrical connection on the back of the table top.
This is where all of my emergency operated devices are powered up...
Roy Ken