Webcam on a mannequin's head fixed with a headset. Head on table, and one player to move it as desired.
Or just get a conference webcam:
http://www.logitech.com/en-us/product/conferencecam?crid=1545
http://www.amazon.com/Logitech-960-000866-Conference-Cam-BCC950/dp/B0083I7Y8W#