While I was at the park, the wind picked up a few times, and I tried to capture the leaves hitting the water. It was surprisingly tricky, especially given the fact that the 55-300's autofocus is a bit pokey.
This was the best one. I thought it turned out kind of cool and minimal.
Nikon D90 + Nikkor 55-300mm DX, 1/160 sec at f/8, ISO 400.