When a struggling grandfather discovered $43,000 in a second-hand couch he bought, he refused to keep the money for himself even though he desperately needed it. After returning the cash, he received a phone call he never expected. After buying a second-hand living room set, Howard Kirby made an unbelievable discovery. (Photo Credit: Screenshot) When Michigander Howard Kirby wanted a couch for his man cave, he headed to the Habitat for Humanity …