Potatoes are a cinch to regrow! In fact, you may already have a few in your pantry that are starting to sprout. Just cut the potato into about two-inch chunks, each containing at least one eye. Let the pieces dry out overnight so they won’t rot once they’ve been planted. Then, bury them about eight inches deep in very rich soil or compost in the early spring. When the sprouts pop up above the surface, add another four inches of soil—and expect a crop of potatoes by midsummer. (Bob Villa)