Good tasking protein can't really hurt. When I come home from college I get harassed by my 9yr old sis for shakes, every day. Some choc. protein powder, milk, bananas or any other basic shakes with normal protein powders are better than the bs in the fridge she could be having. Strawberry banana is also another hit. Strawberry whey and bananas. I wish my dad wasn't so damn lazy, my sis would be better off w protein as a sweet tooth hit vs the other shit she has.
As for "health" stuff, you can't go wrong with fruit blends. Sneak some spinach into the blender with tons of berries. You cannot taste the spinach, but as long as you have blackberries or blueberries the color doesn't make it look nasty. food dye may help too, i guess.