I love "smashed" potatoes with skins - with garlic! But in case you really want to peel potatoes or apples, my daughter's occupational therapist made her a small cutting board with a nail poking up on it for stabilizing the fruit or vegetable while you peel. DD has cerebral palsy with good use of one arm and hand, so they were trying to find ways for her to cook before she went off to college. You can now buy ergonomic kitchen tools such as vegetable peelers with large handles to use along with the cutting board. Of course, DD never used either because she likes to bake potatoes in the microwave if she's cooking for herself.