I have enough vintage machines to loan one out to a neighbor if I think they know how to sew. Mine are all vintage and they'd get a straight stitch machine. I also might just sell them one for $10 and offer a couple of lessons on how to use the machine. I have given a couple away, with a manual and lessons, to people in need of a simple basic machine who are delighted to have been gifted a machine.
I would do a simple mending for a neighbor if asked and my DDs boyfriends do ask me to mend their pants or lengthen their hems. I will do that even though I much prefer quilting to mending.