I’m so good at boomerangs! It comes back every time… Unless, of course, my dog can’t find it.

“Nearly vertically” means that you do want it pretty much upright, but it should be leaning slightly away from your body (based on which hand you’re using to throw it).

When I first heard “throw it into the wind”, a part of me thought “so… it’s going to blow it back to me?”. Clearly, it’s more complicated than that.

Frisbee’s and yo-yo’s are other gyroscopes. The gyroscopic effect is basically spinning that does nifty things.