• A lot of stationary: paper clips, staples, pencils, sticky notes

    A lot of toys: yoyo, slinky, hula hoop, Play-Doh, crayons

    Packaging: cardboard box, plastic bottles, plastic bottles with the lid on the bottom, aluminum cans

    You use inventions all the time that you could probably just build from home now that you know what they are. But there’s nothing that says you/we are already aware of every simple invention. Just think about all the simple, yet revolutionary ideas no one has thought of yet…and if you can do that, you’ll be a billionaire.