Ever come across something that made you go "why didn't I think of that first"? Well, here are five simple inventions that will make you do just that. There's the perfect ice cube maker tray, customizable cushion, a solar tent for all your gadget charging needs, an expandable power strip that's perfect for larger-sized plugs, and lastly, a trailer hitch key safe. Click here to view the first image in today's viral picture gallery. Continue reading for a viral video on how to make a hit pop song in just a few simple steps.