Ever wanted a nice looking printbed? This is the way to go if you are for PEI-coated print-beds with silicone heaters 
http://well-engineered.net/index.php/en/blog/29-heated-printbed-of-the-dice-sealed
Very cool. Might have to build a mini printer just to put this in…or figure out a way to add it to my Printrbot Play