I use stackable totes with lids to keep it organized. My grill, sewer, water and power cords are all on one side while the other is dedicated to the campsite. Wife works from one side and me the other. It fills up in a hurry! Some people put shelves in or you go all in with the Mor Ryde gliding shelves to come out so you don't have to climb or reach in.
I also installed PVC conduit u straps to the celing to put brooms, brushes and campfire forks in.
2014 375 BHFS Eagle Premier
2014 Ram 3500 Longhorn DRW CC
6.7 CTD, Aisin, 4.10's