Spiders were involved, yes...

.... but in a strange way.

.

The leaf happened to float into two sharply angled web anchor strands. They had crossed in mid-air, each one leading to a spider's web 15-20 feet away--in opposite directions--from the accidental (Or maybe spiders plan these things) touch-and-stick juncture that the leaf happened to intersect as it fell. Such a sweet, unlikely coincidence. I just love things like this.

Gravity: there is a way around everything

...walking outside, I glanced up when a crow squanked, and saw this. A silk oak leaf, questioning, no, refuting gravity. On a still, breathless day, it hung, about 15 feet over my head, with nothing between it and the sky. I stared at it for five or six minutes before I went to get the camera. Click the pic to see it more clearly....

I figured it out, but it still seems impossible.

Guesses?