We usually take a spa day on our birthday, but not Tom Brady. As he has since being drafted — in the sixth round — all those years ago, the Pats QB spent his birthday at training camp Wednesday. Some fans celebrated Brady’s 39th by singing “Happy Birthday’’ to TB12 as he practiced with the team at Gillette Stadium. But others stopped by Faneuil Hall Marketplace and took selfies with a life-size cutout of the four-time Super Bowl champ. Pictured at the marketplace are (from left) Margot Palandjian of Belmont, Lilly Kasuba of Milton, Nicole Gergits of Boston, and Callie Shanley of Cohasset.