custom mugs collection

We went to thrift store last week and grab some nice pieces of clothes for myself and for family back home. Husband also grab some quite few pieces like Alyssa's toys and custom mugs. I don't know whats the deal with these mugs that everytime husband saw them, he immensely fell in love with them. No we have different kinds of custom mugs in the cabinets, some of them are from hubby's work which its got logo printed with the name of the institution where he worked at. I guess he likes to collect them.