When Ali Abdullah was homeless a few years ago, he was struck with the brilliant idea that would lead to his current, thriving company, Claim It! Free stuff makes people happy, so he would build a business around giving away free products that people actually want. By watching a 15-second advertisement on the Claim It! app, users are eligible to win prizes ranging from lip balm to pricey headphones. Investors understood the power of this business model, and he's raised millions, including a six-figure contribution from just one investor.