I am completely smitten by these small, lightweight and cool-looking bird feeders. Fortunately, the birds are too. They are inexpensive and are going to be one of my holiday gift/house present staples. Also, (sshhhhhh....) I'm giving a few to my husband, who wants to hang multiples from a tree. I'm all for it because they kind of look like ornaments. Though only 6 inches in diameter, these feeders hold 7 cups of black oil sunflower seeds.
They would also look great hanging from containerized trees.
The Seed Ball Wild Bird Feeder from Sweet Corn Products retails for $7.95.