Life saver for middle schoolers just getting braces, teach them about insurance and save yourself from diving in the dumpster for lost retainers. Simply divide the replacement cost over the life of the retainer and then have your student deposit that sum into a savings account weekly. The deal is if the retainer is not lost they will receive the premium at the end of the term. If the retainer is lost the insurance will pay for the replacement. No more dumpster diving once they realize what the opportunity cost is.