Kids' Crafts: Chestnut spiders - in this tutorial they use matchsticks and embroidery floss, but we used toothpicks and cotton yarn for ours instead.
Chestnut ZOO: Fall Crafts | Multicultural Kid Blogs
Great Fall / Autumn craft ideas for you and the kids! DIY Painted Leaf Art for Kids
hedgehog fall leaf craft - I did this with my son's class and it was a total hit. I'd recommend using leaves that aren't brown yet, as the brown leaves are more brittle and hard for kids it work with.