i play around with lots of recycled stuff , also wood , its fun , i went to one airbnb here , its called pipe hotel , they bought a land and big concrete pipes for sewerage system the big one , put them next to each other and fill the back with bricks and glass door in from , inside only one double bed but mid blowing experience , real sweet place . i also try to make rooms unique but inside a building its limited in a way , i love to book unique places , once i tried tent on the roof in hong hong , also interesting , double matterace on the floor and tent on the top , also that place had sun roof otherwise you burn alive , top floor view on HK for 20 bucks