We carry a folding step-ladder which, after closing like a standard step-ladder, then folds the steps so that the four uprights come together into a very compact square tube-shaped thing about 3" x 3" and 5ft long.
Goes into a carry-bag and looks like a slightly muscular spirit level. Stows easily in our under-floor through-bin.
I'd post some piccies, except it's in Girt, and she's currently having some cosmetic surgery...
Hoping she'll be released from hospital (panel shop) by the end of the week.
Watch this space................................... --> [ ]