rv-ceiling-cargo-net a cargo net not for a truck bed or trunk, but to fasten to the ceiling over bunks or the couch in living area. Initially it sounds like an eyesore, but if you purchase high quality cargo netting, it should allow for enough stretch to retract out of sight when not in use.
I want to incorporate/fuse this idea with the basic principles of a steamer chest or carpenter's toolbox. Have the big drawer that slid out open outward to create an L-shape with fold up legs to support it and staircase trays open up to create shelves. Boom! full size bar.