In this instructable, I will show you how to make an acorn make a high pitched, whistling sound.
Step 1: Materials
An acorn shell,
and your mouth.
Step 2: How to
Put your thumb knuckles over the acorn in a V shape about 4/5 up the acorn, being sure to leave about half a centimeter of uncoverved space.Now put your lips over your knuckles, one below and one above, and then blow as hard as you can.