I just picked up a wonderful little book at a used book sale called “My Recipes Are For The Birds”.
Not only does the book give some great tips for attracting and feeding local birds, but it also uses and reuses many items instead of trashing them. In their special recipe for finches, they combine ingredients in a cleaned cat food can and then nail the birdy delight into a board or tree with the nail becoming the perch.
You can find all their recipes in the book or get creative and make your own.
More of My Recipes Are for the Birds by Irene Cosgrove