Answer:
I travel in a gaggle.
What goes up and down but does not move?
You use me between your head and your toes the more I work the thinner I grow.
Lighter than feather and softer than silk, yet the strongest man in the world cannot hold me for more than a few minutes. What am I?
You do not want me when you donβt have me but when you have me you don't want to lose me.
What did the piece of wood say when he saw the screwdriver and screws approaching?