We also have a 264BH. We bought 5 plastic "milk bottle" crates from Target for use in our pass-thru storage compartment. One crate holds Black Water tank supplies, another holds electrical supplies such as extension cords and surge protector, another for Fresh Water supplies, the 4th crate holds tire bottle jack, lug nut wrench and torque wrench, and the 5th holds miscellaneous stuff I might need on a trip. All 5 crates fit neatly and nicely in the storage compartment.
2019 Jay Flight 264BHW, Rocky Mountain Ed.
2020 Ford F150 XLT SuperCrew, 3.5L EcoBoost w/Turbo