A hard shell that unfolds like oragami will fit in a single Starship payload but expand to over 250k cubic meters of space (which seems impossible, that’s like 10 olympic pools) and offers practical solutions for many of the common engineering challenges with building long-term human habitations in orbit.
It’s apparently a much bigger internal volume than you’d get with today’s inflatable tech. With the caveat, of course, that inflatable tech has been tested already and this has not (though we’ve used origami techniques to expand payloads before, like on the JWST)