Well I don’t know about where you live but where I live there are spiderwebs everywhere (sadly including inside my house). So yesterday we did at least part of the Outdoor Hour Challenge from Handbook of Nature Study. My kids really enjoyed looking for the spiderwebs and then picking which one to draw. Here are pictures of 3 of them that they decided on for drawing purposes. There were pleny more around.
This picture I took because I found it interesting how the mushrooms seemed to be growing in a circle.