Skip the bargain bin: 13 school supplies that pay for themselves

It's easy to save money on back-to-school basics like pencils and notebooks, but some purchases are worth spending a little more on. A backpack that lasts for years, a TI-84 graphing calculator students can use from high school through college and AirPods for less than $100 can all pay off over time. We rounded up 13 back-to-school buys worth the investment, organized by age group. Little ones can be hard on their gear, but these picks will grow with them and actually last. Kipling's signature c