One side is all related to truck cleaning and such. Rags, towels, fluids, etc. Then I use that one (driver side) to charge things if I need to with the outlet. Other side is work stuff such as vest, hard hat, etc. and plenty of spare room. Adjust either side for tailgating on game day such as food, ice, flags, utensils, etc. Although they aren't the most fit and finished things in the world (warp sometimes, aren't quite aligned like they should be) I would not trade them for anything.
Under the seat in the storage is my "bug out bag", basically everything I need if (or when) stuff hits the fan. Or some other emergency. Trauma kit, clotting mix, ammo, walkies, spare clothing, meds, block calories (food), lifestraw, water pouch, flashlights, zip ties, duct tape, jumper, solar charger, etc etc. etc.