Two Rubbermaid Action Packer small storage boxes. One is fluids........Seafoam, Diesel additive, WD40, White Lithium spray grease, Silicone spray, I think a spray paint can, RainX, and..........I don't even remember what else. Plus rags.
The second is tools that I don't usually need........huge open end wrench for trailer ball (for boat trailer), large socket set, and such.
I throw the wooden 12" square 2X8 blocks in the back, and when I unhook the power cord, it gets thrown in the back there too. It's waterproof, obviously, and easily available for next stop.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS