Answer:
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. 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.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
People need me yet they give me away every day.
What made Cyclops quit teaching?