Seed feeders come in various shapes. Some look like trays, while others have a box or circular shape. Pieces of plywood 1/2-inch or 3/4-inch thick make sturdy seed feeders. You can also turn used bottles and tin cans into seed bird feeders if you add holes and perches.
A suet feeder contains pieces of hardened animal fat and usually has holes or mesh through which birds eat. A hollow tree log with holes can serve as a suet feeder. You can also hang a plastic mesh bag or hardware mesh cloth containing suet.
Hummingbirds drink nectar liquid from an inverted bottle feeder or a saucer feeder. A homemade hummingbird feeder uses bottles or bowls to contain the liquid. It usually has a wire hanger and red decorations because hummingbirds find the color attractive.