This "Triple Bespoke Glass Sphere Water Feature" by Tills Innovations in the UK uses a polycarbonate sphere that fills with water and has water flowing down the outside of the sphere. This is the type (Diy Garden Waterfall)
Creative bathtub designed by Splinter Works. Bathtub is suspended from the walls and does not touch the floor. Layers of carbon fibre mixed with foam based core insulate the bathtub and keep the water warm for much longer than any traditional bathtub.