The twizzler nibs can be used to make a transistor. Here, we've written the designation on the surface-- tricky to squeeze out icing that fine. (Some of the others that we made actually look much better-- I don't know why I picked this one to take a picture of.)
We've also added three toothpick feet. Not strictly speaking food, but they are a standard non-food component that is often found sticking into food.
Part of the circuitry snacks project: Edible models of functioning electronic circuits. Designed for fun, for geeks, for kids, and for teaching and learning electronics.