If you want to keep your toddler busy for no less than thirty straight minutes, prepare a pomegranate for her.
I suggest as little clothing as possible. Pomegranates do stain.
Today she ate the whole thing (we used to split one). Not only was she busy but I literally didn't hear a peep for at least thirty minutes. And then she asked for the other one. Must spread out the joy - we'll save that one for tomorrow.