Butterfriends.

If one is going to have tiny minions that collect sprinkles for ones own consumption, having them be innocuous creatures like butterflies is definitely the way to do it.
Imagine, you're eating a cupcake, when, along comes a pretty little butterfly! "Awww, isn't it cute?" It lands on your cupcake! So adorable! Then SNATCH, it makes off with the sprinkles, clutching a sprinkle in each tiny buttery leg. Nobody would believe you either, if you told the police that butterflies took your sprinkles. It's the perfect crime!