The best inventions are the one that fill a niche that you didn’t even know was open. There the kinds of things that you might not be able to articulate that you need, but after you have them, you don’t know how you lived without them. These are 18 of those inventions. From remote control headgear to a leash for your goldfish, these 18 genius ideas are about to blow your mind. #14 would solve so many dinner party problems.