These painted acorns are so lovely! You'll find instructions at Home Stories A to Z.
These shimmery, golden acorns are pretty, too. From Light of Day Creations.
Acorns are cleverly used in this flower arrangement. From Decor4Fall...
...and in this hanging candle jar lantern. From Pinterest.
You can even use them to create a unique photo frame! From 320 Sycamore.
Here's another photo frame idea from An Extraordinary Day.
Or make a Christmas ornament with acorn caps! See instructions at Sweet Something Design.
Of course, you'll want to know how to clean and dry the acorns for your decorating projects–see instructions at Hometalk.com.
What other creative ways have you found to decorate with acorns?