LEGO Mindstorm Robotic Toilet Flush System
This LEGO Mindstorm Robotic Toilet Flush System is a very polite robot that thanks you after you use the toilet and then flushes it for you. There are full build instructions on the site so that you could build your very own. A study should be done to see if the positive acknowledgment (the thank you phrase) would lead to an increase of water consumption. 🙂 Video after the jump.