The strangest things can pop into your head while you’re trying to sleep. Should you get your most brilliant ideas at that time, maybe you should invest in this pillow. You can write on it over and over again, then just erase it after you’re finished. Of course it’s hard telling what strange things will be written down when you start writing while you’re half awake. You could also use it to leave sweet little notes for your significant other. You can purchase one of these for 18 Euros or about $22.