The goal is to basically show an example of what is in my underfloor storage.
Cardboard to keep the drain from getting damaged, then a set of tools and the ever popular jack.
Two blue bags of "junk", one has ratchet straps and one a bunch of caribiners and other attachment pieces. Each about the size of a football. Then a pillowcase full of screen material and a case containing fire starting materials. Dish tub and two buckets, small inside the large. The cardboard is a box of tent stakes.
Next is the spare butane stove (another black case) and some fire tongs and welding gloves. A folded paper sack joins the fun.
That's all I had so I put an old cardboard box and threw the fabric softener box in just to keep things in order. Later these were replaced with a pair of boots and a pair of sneakers. The organization is supposed to be least used on the bottom, so the stove should really be on top of the shoes. There is still too much space, I could fit more small items, but things get lost and it becomes less then useful when you don't remember ever little thing that is shoved in there.