Like a Windows Computer Maker! Or a Computer Breaker or a Did You M****er (let's not talk about that, should we?) Someone Detector? Or a never-ending storage increasing USB? Or paper that you can write on using your fingers? Or sounds only you can hear though it doesn't look like it? Or looks that only you can look though it doesn't look like it (look(s) counter: 3). Or a speaker that ensures it never gets too loud (but does anyways)? Or a Start Menu in real life, so you can control your actions? Or a 3d printer for when you print something, it comes to life? Or a 2D printer that prints the paper, then the thing on top of it in real life (so you could trash the paper and use the thing)? Or a universe simulator where you can create a universe in real life?
Credits are above the description