Answer:
Angels and pilots work with me.
I am an insect half of my name is another insect. I am similar to the name of a famous band.
Light me up in backyard gatherings
My full powers come when my makers are dead. I await a heavy hat to put on my head. What am I?
I am bought by the yard but worn by the foot. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.