Straw Horn

This is a simple Instructable on how to make a straw whistle.

Step 1: Cut the Straw

Cut the straw however long you want. It should be at least 4 inches though. The longer the straw, the lower pitched the sound is.

Step 2: Cut Again

Next, cut edges off about 1 cm down from the tip of the straw. Cut the edges at about a 45 degree angle.

Step 3: Hold It Down

Hold the end of the straw with your fingers really tightly until the tips are about 2 mm apart. This may take a while.

Step 4: BLOW!

Blow into the end that you held down now. It will make a funny noise!