Is anything more enchanting than a rainbow? Not really. Which is why this little device—a rainbow machine—is so ingenious. Uncle Milton’s Rainbow in my Room sits on any flat surface in your home, and, with the mere push of a button, projects a colorful arc across the walls and ceiling using multicolored LEDs. All you need is a few batteries. Though designed as a children’s night light, a rainbow machine is a rainbow machine—and it will make you truly happy no matter how old you are.