Everything we’ve been able to buy in our retail stores started as an incredible invention - even your standard everyday things like scissors and straws. But some people have needed items they couldn’t get in their local store or purchase affordably, so they decided to build them themselves with amazing results. From a rollercoaster to a cardboard car, here are 20 amazing homemade inventions made by true geniuses. ► For copyright matters please contact us: top5sfinest@gmail.com