Well we all have gotten those lovely calls just as we are sitting down in front of dinner, or trying to relax after a long day of work. The phone rings and no its not your Aunt Judy, it's some spider monkey telemarketer trying to sell you spray on hair or some other useless product or service. Well here is a little device that intercepts those calls and then through an algorithm plays a list of WAV files to annoy and harass the inconsiderate salesperson. It will cost around 20 bucks to make and should be a standard for any home ;)
Check it out here.