Answer:
you can throw me away but I will always be coming back
I run up and down the stairs without moving
I shave several times a day, yet I still have a beard. What am I?
I am known for my natural tuxedo and marching. What am I?
I have memories but none of my own whatever's on my inside is what is shown. If I'm ever different it's because you changed me I feel like a decoration here for you to arrange me.
No matter how little or how much you use me, you change me every month.