These large, galvanic deep-sea Russian mines were originally produced in a large factory on the Estonian Island of Naissaar during World War II, and used to fight submarines. They now exist as various furnishings for the home.
These chairs, bathtubs, beds, stoves and baby strollers are probably more decorative than functional, as the original mines weighed in at 1140 kg. (Not for the faint of heart!) Created by Estonian sculpture Mati Karmin, you can see more at MarineMine.