Sweet potatoes. You can start them in a rather similar way as potatoes, but another way is to buy a sweet potato, use popsicle sticks or whatever to prop it up, and soak the bottom in water until it sprouts leaves, roughly 3 weeks or so. Then just plant it. in most places they will go wild and may even take over your whole garden.

https://extension.illinois.edu/blogs/good-growing/2020-04-22-how-grow-sweet-potatoes

Sweet potatoes. You can start them in a rather similar way as potatoes, but another way is to buy a sweet potato, use popsicle sticks or whatever to prop it up, and soak the bottom in water until it sprouts leaves, roughly 3 weeks or so. Then just plant it. in most places they will go wild and may even take over your whole garden.