Not looking at the shape because that is hard to shoot (or interesting) but more the bamboo look Garden Shower- pinning this on Products I Love with irony. Invaded by bamboo - need to find crafts to use those long sturdy stalks.
DIY natural swimming pool - the video provided in the link is pretty cool. I've had dreams of these things, and now that I've seen an actual video I'm a bit kreeped out because I don't like swimming in dark water, but the pool itself is pretty awesome
25+ Impresionante Ideas Rusticas para el Baño con Palets