I came across a charity called “Shelterbox” the other day. The contents tie in with my recent article on foundation survival kits.
A single shelterbox can hold materials for up to ten people, which is some impressive packing. The exact contents are varied to suit the intended location. I suspect many people might be interested in purchasing similar kits for their families. Such a box could do double duty as a table or footstool until needed. 
A bit of research identifies the box as 185 litre capacity.
You can carry a shelterbox on your back, but if you are smart, you find other means…