Honestly, Amazon is surprisingly annoying about this. Youd think a company that big would have a share button by now, but they dont. I would suggest being careful with the Wish List idea because quantities often reset to one when someone else moves items to their cart, which is a total pain for dorm supplies. Ive been through this before and it usually ends with someone forgetting the laundry detergent or getting the wrong power strip. You might want to consider using Cart To Link instead. It basically lets you bundle everything into a single link so your roommate can just grab the whole lot at once. Just make sure to double-check the cart one last time before he pays to ensure the student discount actually applied correctly to every item. Its way safer than manual links and keeps things organized.