I was sweeping out some dead leaves from our driveway and a bright green tiny thing came flying out! Upon closer examination, I realized it was an itty bitty frog! It's hard to judge the size by this photo, and the thing was so darn fast I couldn't get a great shot, but this is in concrete, and those pebbles in the concrete are pretty tiny!
This was the cutest critter that I could have been surprised by while sweeping leaves. (Other things found - black widows, roaches, giant brown spiders, worms...)