It is important that children are well hydrated. They don't stop for a moment, and to cope with their body's demand for liquids, it's a good idea to always have a bottle of water or other healthy drinks on hand.
Do you want them to take care of hydrating themselves frequently? Nothing like making this ideal sized bottle, which keeps the water fresh for many hours and also has a nice cover, by Txema Sanz, to protect it, available to them. Have you already met the nicest dragon in the neighbourhood?