I am the last one, and I once broke a camel's back. Woven together, I can become a hat.

I’m where pirates hunt for buried gold, my mark is plainly drawn and bold. Yet call someone upset or sore, and I may describe them even more.

A friendly greeting by hand Or roars across the ocean to land Ripples through a stadium stands Can carry signals to different bands

I can be cracked, I can be made. I can be told, I can be played. What am I?

I sound like you can take me on a plane I guess you could, but you’d be insane.