Dragon pets. (1.12.2+) Make dragons as big as enderdragon and as small as parrots, that are your pet.
Smoothie/milkshake/coffee/tea that adds in different types plus stands, mugs, etc.
Makeup mod - adds in different types of makeup, in shades colors and names, includes lipstick, blush, eyeshadow, liner, eyelashes, contact to change eye color and more.
Those are just some ideas