I've never added any shelves or additional storage space in my camper. LIghter items are kept in the upper shelves/cabinet and heavy items always down low or on the floor area.
I'm conscious of everything added to the camper so not to overload it with a bunch of unnecessary stuff and anything I haven't used in a season, probably don't need and is removed.
Filling every little nook and cranny with 'stuff' just doesn't seem smart to me.
2012 Fun Finder XT 276 Toy Hauler & Harley Davidson Ultra Classic with Condor wheel chock
2014 Dodge Ram 2500 AT 4X4 Crew Cab 6.4 L Hemi, 373 gears, tow package, Rambox option, Revolver X2 tonneau cover, Equal-I-zer anti-sway hitch.