According to I Believe in Advertising:
A record player created from a piece of corrugated cardboard that folds into an envelope. Once assembled, a record can be spun on the player with a pencil. The vibrations go trough the needle and are amplified in the cardboard material. The players were sent out to creative directors across North America as a creative demonstration of GGRP’s sound engineering capabilities.I'd hire them! Heck, I'd even pay good money for the mailer!!