Flying Spinner

Given a good spin, these will fly straight on their own lift, then tend to drop downward or even backward. A quick video: https://youtu.be/AUx6l08fFt8

You can launch them with a good fingernail flick but for extra fun I've added a little "blowgun" print. The print has a small engraving of a spinner that shows the orientation: you want two of the propellers to be on the back side with the smaller hole (this is where to blow) and you load from the other end.

There's a notch inside to start