Answer:
With a halo of water and a tongue of wood, stone as skin long I stood. What am I?
I am the noblest musical instrument
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
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 come without being fetched at night hides away as soon as daylight strikes. Although I may look small I am much mightier than what you can imagine.
The answer I give is yes, but what I mean is no. What was the question?