I dump my old macbooks on friends and family when I do an upgrade for speed reasons. I usually rotate every 2-4 years. My parents are still using a 2014 air that I got out of a box my previous employer was going to send to recycling. It's probably about time to upgrade them. They generally have the same usecase. They use iPads for most things, but sometimes they want a physical keyboard. They have rejected generally the ipad keyboards as 'weird'.