I'm putting the finishing touches on my bed deck with drawers. Thought I only wanted one drawer, but It's so handy I'm building another.
I put a piece of wood on one side of the topper bolted down with the topper clamps and there I mounted a wire basket from Amazon that holds various things. Target has these little rag baskets that I have holding water bottles, sun block, and other sundries.
I made a web of paracord on the other side that can hold things like a sun tent and ground matt. It's all quite handy. I work out of the back of the truck during the week and play out of it evenings and weekends.
-M