Inadvertently becoming a collector of things you really aren't all that into

This sort of happened to my father-in-law. He's an early baby-boomer that worked as a train engineer for 20-30ish years. Thus all his gifts from family are Beatles and train paraphernalia. Granted he doesn't have an aversion to either of these, he's still a Beatles fan and has some model trains, but I can't help but think he gets a little disappointed when he is handed yet another t-shirt of either.