We have two who love love love ice cubes. Everytime they hear the ice machine on the fridge when someone puts ice in a glass they come running. Both of them sit at full attention waiting to get their cube. Copper eats hers, Shadow plays with his, sliding it all over the tile floors in the den and kitchen before eating it. Of course, it half melted by then.
Suzie loves delivery trucks, mailmen, those people who check your gas, meter readers.... basically anyone who comes to our house and interacts with her. Most of them know her and love on her, and give her treats. Her favorite part of the day is when the mail lady comes, because she'll run up and down the fence barking her head off. And the mail lady adored her. She would toss a treat over every day, and Suzie would take an intermission to eat.