Dirkon
The Dirkon is a paper camera kit that was first published in 1979 in the Communist Czechoslovak magazine ABC mladých techniků a přírodovědců. The pattern was created by Martin Pilný, Mirek Kolár, and Richard Vyškovský.
The name Dirkon is a play on words based on the combination of the parts of two words: Dirk- is the beginning of the Czech word dírka, and -kon is the end of the name of the well-known Japanese camera, Nikon.