Petros bobbleheads for sale The psychology department is raising funds to establish a student research and travel endowment by selling bobblehead dolls of one of its most (in)famous professors, Tom Petros. Those wishing to own a ceramic version of this iconic professor and support the students of the psychology department are encouraged to contact Jeffrey Weatherly at 777-3470. The cost of the dolls is $15 and all proceeds go toward establishing the endowment. Please make checks payable to the UND Alumni Association.