I might not be able to draw very well but that doesn’t matter with this iPhone case (the pencils aren’t real). Ok, I lied, I can draw alright. Maybe you’re artistic or you have a friend who is. Things like this are perfect for you (or your friend).
If I didn’t know what it already was I would be convinced it was a pack of colored pencils sitting on the table if I was just walking by. Now the real problem comes when you’re siting there drawing in a coffee shop and your phone rings and you pick up your colored pencils instead of your phone.