For now we use material handling boxes. They are pretty tough, but not dust or waterproof. One holds the kitchen, and we set that outside wherever the terrain is handy at camp. Used to want a builtin kitchen but found a preference for the flexible one. Other boxes (which we sleep on top of) are full of tools, fluids, spareparts, recovery gear. They hopefully stay closed the whole trip.
The boxes come in many sizes, and I ordered the size that fit the best in the back (no stacking, just one layer, flat). One can open a box without removing it, even when stacked in tight. (Some boxes need space for that). Thats why I picked this kind.
But a drawer system is the future.