Painting pumpkins is a big hit!!
Gathering acorn caps and then glueing them with a bit of help onto unfinished wood peg people. You can have some premade tunics they can choose to dress their person in. For a tunic, cut a piece of felt in a rectangular shape with the short ends wider than the middle so it will flare like a dress. Then fold in half and cut a little slit in the center to slip over the peg person's head. Slit should be small so you have to stretch it over their head. String or a thin piece of felt makes a belt for the tunic. Voila! Little fall acorn people.
You can gather leaves and press them in books or press them with a barely warm iron between 2 layers of waxed paper.
You can make simple clothespin cornhusk dolls. Place several layers of corn husk together. Let child help to lay them out and then cut an itty bitty hole in the middle. Let child help slip it over the clothespin doll's head. Then use another piece of thin cornhusk to tie a belt. Let child choose a small bit of wool and help glue it on for hair.
Apple print painting. Tell a magical story about how the star got into the middle of the apple. Then cut the apple in half across it's middle/sideways. The center where the seeds are contains a star shape. You can then use the apples cut in 1/2 to make apple prints on paper with paint. Heaven on Earth and other Waldorf books have ideas for a story.
Make a simple apple wreath. Grocery stores or orchards often have apple peeler things for about $10. It suctions to your counter top. You place the apple on a forked end and then turn a handle to peel, core and slice the apple all in one fell swoop. Children LOVE to turn the handle! Then you can use a dull needle and red yarn or ribbon to thread the apples together, making one slice turned one way and the next sliced turned the other way and leaving a bit of space between them on the ribbon. Hang in a window and let dry. This idea is from Heaven on Earth.
With pretty Indian colored corn, (large kernel kind best, not miniature) let kids use thumbs to push kernals off into a bowl. The next week you string the kernels onto a necklace. i think you have to soak them for a week tho maybe. You could try to google this idea...
Make Walnut babies. DD and I did this for Christmas ornament/presents last year. Halve a walnut and take the nut out. Place some glue in it and press some wool of whatever color into it. This is the fluffy mattress. Next glue a tiny unfinished wood ball into the tip of the walnut "cradle". (best to wait a few min til the wool is set a bit). Then take a tiny bit of fabric cut into a "blanket and tuck around the baby with a bit more glue. Oh! And you have to place a ribbon tied in a knot in the middle with the knot glued in under the wool mattress - that 's the first step. Then when it's done you can hang it. These are really cute!
How about making some sort of bird/squirrel birdfeeders? You can collect seeds from thistle down, birdseed etc and mash into peanut butter and place it all inside Walnut shells. You can even drill the walnut shells first onto a little board. Or you can find pinecones and roll them in peanut butter and then in birdseed. That would be great fun for a toddler!! Hang with a ribbon or string.
We like to go on nature walks and find squirrel or chipmunk picnics - ie places where there are lots of chewed up nuts all in one spot. You can even tell by how the nuts are cracked/chewed what sort of animal - squirrel, chipmunk, mouse etc - had a picnic there. You'd have to google that tho as I've forgotten.
And of course you can make applesauce - not totally a craft but so yummy!!