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?
Credits are above the description