I thought I could do a definitive list.
Girls:
Sweet foods
Plants and flowers
Being shy and quiet
Loving your family
Sleeping animals
Blushing
Cats
Eyelashes
Pink, lemon, pale pastels
Boys:
Being angry / loud
Scary animals
Sports
Disgusting / dirty things
Super powers
Dogs
Space
Vehicles
Brown, navy, grungy shades
Feel free to add.