So this is basically like PPAD's Margarita Quest, but with less risk of alcoholism. Do some stuff and you can get this pin:
Complete five tasks listed in the grid below. The tasks must be in a straight line (horizontal, vertical or diagonal). Take pictures of yourself completing tasks and tweet each to @thx42 with the grid coordinates and the hashtag #paxselfiehunt. When you complete a line of five tasks, find me (thx42) to collect your prize (limit one per person, while supplies last). I can usually be found at pin panels, community pin trading events, and near Merch Lite.