If the washer or dryer monster mysteriously consume a sock and you're left with a spare, or if your socks are past their prime, you can use them for other things.
1. When dusting or cleaning, simply slip the sock over your hand and use it to wipe down anything in the house.
2. Fill a sock with rice or wheat, heat it in the microwave for a few seconds, and use it as a heating pad.
3. You can certainly make a sock puppet, or two or three
4. Put a ball inside and tie off the end to make a tug toy for a dog. Or fill it with catnip for a cat to play with.
5. Fill it with leftover soap pieces and use in the washing machine for washing dedicates.