The Clowns Gallery-Museum is a clown museum in Somerset, England, which is home to the Clown Egg Register. Yes, that’s a real thing.
. . . the Clown Egg Register [is] an archive of painted ceramic and hen’s eggs which serve as a record of individual clowns’ personal make-up designs. The egg gallery was created because according to an unofficial rule, no two clowns are allowed to have the same make-up. In order to ensure that clowns weren’t copying each other’s makeup style, the practice of painting each unique design onto an egg began. Real eggs were originally used, but were later replaced with ceramic eggs.
