My MIL swears that dryer sheets are good for cleaning baseboards. You take one and rub it on a baseboard and some how dust just... avoids those annoying little nooks and crannies. I haven't had to clean them again in literal years, but thats the only good use I've heard for dryer sheets. It's a hack on a tiny task I never take time to care about really, not sure if that in anyway justifies the existence of dryer sheets, but there you go.