Most parents don't put a price on their children's safety, which is why high-quality car seats, helmets and childproofing devices practically fly off the shelves. One safety device that doesn't cost a penny -- and is abundant in all homes with indoor plumbing -- is the cardboard tube that you find at the end of a roll of toilet paper.
Safe Kids Worldwide recommends that parents of small children use the standard 1.5-inch (3.81-centimeter) tube to determine whether a toy or object is too small for a baby or toddler to play with. If an object can fit through the tube, it can fit down a child's throat -- posing a serious choking risk.
When in doubt, parents or caregivers can use a toilet paper tube to determine if something is hazardous to a child who doesn't know any better than to put it in his or her mouth. It's a simple way to reuse cardboard and to potentially avert disaster.