I haven't done much-- but I did made things a little easier.
First thing I did was to made a hitch on the back of our trailer. I welded 3" tube steel from frame to frame, welded a 2" receiver to that then tig welded the receiver to the underside of the bumper.
(a little dirty but you get the picture)
Then I welded all steel frame for my genny and a piece of 2" tube steel -- and bolted the genny to the frame, welded a chain to the frame and put a lock around the genny to keep honest people honest. I also bought a lock for the receiver.
The fame has just enough room for the genny and a Jerry Can.
I spent my life in the NAVY so am used to NAVY showers-- installed a ball valve on the shower head. Teh shower head was cheap, I should have just replaced it with one that didn't leak-- but I was bored and had a extra valve in the tool box. I might cut it off and buy a nice head.