I have found that they like dry, unsalted popcorn. They also like small kibbled dog food, and really go nuts over dried cranberries and unsalted almonds. If there are sunflower seeds in the mix, they are always the last to be eaten.
They also like vol-au-vent or other canapé.
They also liked dog food, but they would always dip it in water first.
Other bird feeders just dump out some seed, you are chefs!