Answer:
Fuels backyard get-ยญtogethers
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
Take one out and scratch my head, I am now black but once was red.
If lightning strikes an orchestra who is the one most likely to get hit?