I’m grateful to those who recommended the IKEA Frakta shopping bags. I ordered a set of 10 size Large from Amazon for $19.99 and they’re being delivered to the Amazon Locker on D’s campus tomorrow. I like them because they are soft sided, making for an easier time fitting them in a car than a cardboard box, plus they zip up so no need for packing tape, plus they have handles for carrying them from the dorm to the car. D’s LAC is bringing a company on campus for Fri/Sat of move out weekend that will box and ship, but I suspect that gets very pricey, like going to the local UPS Store franchise.