Pavlok is a wristband that shocks you into better habits. You can press the button manually whenever you feel a craving or otherwise recognize a bad habit coming. It connects to your phone and computer and can beep, vibrate or shock when you have too many tabs open, when you go on Facebook, and even knows to automatically stop you from biting your nails.
This product is well matched to entrepreneurs. It self selects to people who want to go to extreme lengths in order to achieve enhanced productivity. Well matched to me, personally, and very attractive to that demographic in general.