In 1968 a furniture designer in California, Charles Prior Hall, was working on creating the world’s most comfortable chair. Since bean bag chairs were all the rage, Hall filled an inflatable bag with 300 pounds of liquid corn starch. When he sat in it, he found he sunk too low that he felt he was being swallowed by the chair. He replaced the starch with Jell-O. This became lumpy and uncomfortable. He scrapped the chair idea and filled a rectangular piece of vinyl with water, creating the waterbed. This took off like gangbusters.