Yeah, we've all got/tried the crow, owl, peacock, pileated woodpecker, hawk, and the most famous ------------ Drury's Turkey Whistle. I know some that carry a shrill whistle (referee) or a duck call (wood duck shrill). Now, don't go giving me thunder or a car door, you aren't carrying that in your pockets. I truly mean carrying it.
I've still got one up my sleeve and will post it later, looking to see what you all might have found.