Little Lionel train sets use wood, plastic, and metal. Wooden junior sets are typically non-powered, while plastic and metal components are common in O Gauge models that are battery- or electric-powered.
Little Lionel wooden junior sets use magnetic connections so engines and cars snap or glide together on most 1" wooden tracks. Some product listings include track, while others specify that track is not included.
Available little Lionel sets include wooden magnetic junior sets for young children, battery-powered O Gauge sets, and electric O Gauge model sets. Across listings, materials shown include wood, plastic, and metal.
Battery requirements vary by listing: some sets require no batteries, some require batteries that are not included, and others specify battery types (for example, AAA for remotes) or list batteries needed for battery-powered locomotives. Check the specific product details for exact battery counts.