Eli Joseph Cossman (April 13, 1918 – December 7, 2002) was an American inventor, businessman, entrepreneur and author.
With Milton Levine, Cossman was the co-creator of the ant farm[1] and spud gun toys.
He also made millions of dollars selling various novelties and conducting sales seminars.
[2] In 1965, Levine bought out Cossman, renamed the company Uncle Milton Industries and packaged the product as Uncle Milton's Ant farm.
A 1989 article in the Chicago Tribune called him the "King of the Thingamajig".