Pinecone Acorns

Perfect for a cottage-style centerpiece, these beautiful little acorns are an inexpensive and easy-to-make fall craft idea. Using a plastic Easter Egg as the base and a pinecone and twig as the cap, the materials are probably in your home and yard at this very moment. They look great in a bowl on the coffee or dining tables, but I bet they'd also look awesome strung together as a garland, or around a wreath.  
Get the tutorial from Life is a Party

Fall Leaf Mason Jar Candle Holder

This incredibly inexpensive fall craft idea brings all the colors of autumn into your home accompanied by the warm glow of a tea light candle. Leaves require around two weeks to dry, so it requires a little foresight, but once the materials are assembled, even a child could Mod Podge leaves onto a mason jar and walk away with a lovely large votive.
A tutorial from Spark and Chemistry

Acorn Picture Frame

This charming fall craft idea encases family memories with a fringe of acorns. Take this project to the next level by using a picture from a recent fall jaunt, perhaps a hike where everyone collects acorns. Then use a dollar tree frame, some hot glue, and the newly acquired acorns, and the result will be an inexpensive and fun keepsake to treasure. To ensure a long and healthy life for this new keepsake, it might be prudent to dry out the acorns before gluing them.
See more from 320 Sycamore

"Fall" Covered Letters

A fall craft idea that literally spells "FALL"; how could we pass it up? Of course, as noted in the intro, this craft is only relevant in the U.S. and Canada, but "AUTUMN" is a mouthful compared to "FALL." And "FALL" is the perfect word to cover with patterns and designs because of all the straight planes.
Hoosier Homemade can show you how to make it

Cozy Yarn Autumn Wreath

For a clean and classic look to welcome visitors, hang this cute and cozy yarn wreath on the door. An easy fall craft idea with obvious charm, this wreath can spruce up any door within a few hours. Wrap a Styrofoam wreath base with yarn in your favorite fall color, and trim it with adorable wool or felt flowers.  
Learn how to make this fall craft at A Pretty Life in the Suburbs

Stick Art

Basic materials come together to form a stunning three-dimensional piece in this fall craft idea. A large old frame and some collected sticks trimmed to the same length create a work of art worthy of any mantle. For a special fall flavor, paint the frame a deep red, warm orange or flat gold.
DIY Home Sweet Home has all the details

Rustic Fall Banner

The details of this rustic banner make it a fall craft idea to impress. The lovely banner is made from fabric, scrapbook paper, pinecones, berries, ribbons and leaves — a perfect recipe for a lovely banner.
Felicia Kramer has the step-by-step process on how to make this rustic banner

Skeleton Leaves

This is a beautiful and intricate fall craft idea that can be added to a plethora of other projects: scarves, ornaments, wreaths ... the possibilities are only limited by your imagination. A time-consuming and thread-thirsty but truly impressive project, the skeleton leaves require surprisingly few and uncomplicated materials including a pen and paper, lots of embroidery floss, thread, sharp scissors and a needle. Draw a leaf outline and basic veins, then trace them with a needle and embroidery floss. Then go over this basic design over and over again and secure it with basic thread. Once the frame of the leaf is established, start the intricate web. 
See the step-by-step instructions and many more pictures at How Did You Make This