You can look up all kinds of recipes online for stuff. Just type in flavors you like and hit search. You'll net yourself at least a dozen smoothie recipes for them.

Ooh! If your mun likes those Nutter Butter cookies, one of my mun's favorite recipes tastes kind of like one: Just toss in milk, some granola, a little bit of honey, some peanut butter, and some ice into a blender. Tastes a lot like the cookie and it's really refreshing on a hot day.