(photo credit: Toysmith)
Believe it or not, Silly Putty is not all fun and games; it also has a serious side. Some accounts claim that because of its adhesive quality, Silly Putt was used by Apollo astronauts to secure their tools in zero gravity. Today, it’s unclear who invented it, but Peter Hodgson was the genius who started marketing it. In 1950, he sold 250,000 units for a dollar each — in just three days. By the time Hodgson died in 1976, Silly Putty was bringing in over $5 million a year. Today, the slimy stuff that “bounces, molds, stretches and snaps” is as popular as ever.