I find it kind of fun exploring new cubbies that can be used for something. When space is precious, every square foot (maybe even sq inch) is like a glass of water in the desert!
Today mounted a 84 watt solar panel on the roof. Want to have about 300 watts up there eventually. Ran two #6 wires up thru the black tank vent so as not to put any more holes up there than necessary. The charge controller (40 amp) can be seen in one of the pictures mounted right rear of bed.