30 Inventions That Seem Useless But Made Their Creators Millions

10. Antenna Balls

Antenna balls are little balls that you can put onto your car’s antenna for a bit of style, without the potential of rubbing off the car’s paint job the way that bumper stickers do. Jason Wall was inspired to create them by a Jack-in-the-Box commercial, and within a year, he had sold more than a million dollars’ worth.

With the immense success of antenna balls, Wall secured accounts to sell his product through major retailers, including Wal-Mart. In 2009, he became the CEO of his own company, In-Concept Inc., which continues to create the entirely useless but profitable antenna balls.