Answer:
Who keeps the ocean clean?
I need to be taken before you can have me. 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. What am I?
I can't go left, I can't go right. I am forever stuck in a building over three stories high. What am I?
I am used to bat with, yet I never get a hit. I am near a ball, yet never thrown. What am I?
Some try to hide some try to cheat. But time will show we always will meet. Try as you might to guess my name. I promise you'll know when you I do claim.