Answer:
No matter how little or how much you use me, you change me every month.
What is it that given one, youโll have either two or none?
I work when I play and play when I work.
This thing runs but cannot walk, sometimes sings but never talks. Lacks arms, has handsอพ lacks a head but has a face.
What hangs others yet can unintentionally hang itself?
What do angels sing in the shower?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?