Extend the Life of Child's Water Bottle

My daughter has several Thermos brand Funtainers. We purchased these when she was younger and they have fun, younger child prints on them. She did not want to be seen with a Disney Princess water bottle at the age of 9. So, we used her graphic duct tape to re-cover them. Wrap the duct tape around the funtainer until all of the old design is covered. Now we have more mature water bottles that will get us through a few more years.