Attended Midwest Brony Fest in Kansas City over the weekend. One of the events was a charity auction for Child's Play (I put a model of a Wonderbolts F-22 I made in it, and it went for $135 :D ). They got to a piece of Big Mac art which was signed by Peter, and when the bidding stalled at $35, suddenly he came in (turning the place into a riot XD) and signed it again, then took over showing it around and taking bids. Then he did the same thing with a chibi Mac plushie. This video shows the results.