https://youtu.be/oUoc6KEHgm8

The original Wifflebomb was too short and unbalanced to prevent tumbling. This revision eliminates tumbling and will fall faster and produce more noise.

Use about 5 or 6  3/8 ball bearings (slingshot ammo) pushed all the way forward into the main tube to give it nose weight.

You could use something else for weight if you need to.

I print these with duramic TPU for safety and they are very soft and flexible

Printing in a harder filament may be louder but is dangerous to drop.

Drop from your rc plane/drone in a clear, open area away from people and property and use common sense.

Have fun.

Throwing these like a football will not be enough airspeed to make them whistle very loud. Unless you are an some kind of athlete or something. These are designed for higher airspeeds