The Unknown Geniuses Behind 10 Of The Most Useful Inventions Ever

1985: Jack Clements designs a spill-free way to drink coffee on the go

Whose idea: Jack Clements

The inspiration: The Solo Cup Company asked Clements to design a better way to drink coffee on the go. Clements drew up a domed lid, the first of its kind, that would rest comfortably between the mouth and the nose during sips. The dome helped prevent spilling and, by chance, accommodated the foam on lattes and cappuccinos.

What came of it: The Solo Traveler Lid quickly became an industry standard and has helped the company rake in $2 billion of annual revenue.

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