We've all been in a situation where we really need our phone but it's run out of battery at the absolute worst moment. That's exactly what happened to Bailey Page, from Queensland, Australia, while he was attempting to order an Uber home from a nightclub.
The next day, the 22-year-old looked online for a cable-free charger that could fit in his pocket but couldn't find one. He then invested all of his savings into developing the Zip Zap charger during his final year of study.
The handy device clips into your pocket, making it ideal to have by your side at all times. And the product has been so popular that the entrepreneur is now making a lot of money.