Gideon loves a good bourbon! In his age he has grown fond of earthy and woody flavors. An ideal night off is spent with a glass of bourbon, a cigar, and good company.
Also, even though the flavor isn't his favorite by a long shot, he has nostalgia for the garbage ale he drank with his buddies back when he was a new recruit. He'll sometimes drink that when he wants to reminisce.

Gideon can't really keep the pets he would want due to the travel demands of his job, but he always imagined retiring with big dogs. Maybe two of them! He'd want two English mastiffs (maybe he'd name one of them whiskey lol). I do think he has kept a couple of birds in his time to stave off loneliness, but that never really did much. He had trouble forming a bond with them. He didn't feel like he could truly befriend something he kept in a cage.