This is the world's smallest working aquarium, which holds just two tea spoons of water and measures just 30 mm. wide by 24 mm. high and 14 mm. deep, can be held in the palm of your hand. It is so small there is only room for these baby zebra fish.
Attribution for these astonishing works has been lost in the compilation process. First, international currency symbols by Diem Chau. Second, crayons carved into the 12 symbols of the Chinese zodiac, also by Diem Chau.