When I was growing up in Montana, we would make log bird feeders in junior high shop class. These are basically just an 18 or 24 inch long pine log, with a screw in the top. 2 inch wide sholes are drilled randomly into the sides.
If you were really good, you'd drill a small hole beneath each big one, and glue a wooden peg into it for the bird to stand on.
You'd then mix bird seed with suet and fill each hole. You'd then hang the feeder with wire or string from a tree branch.
Suet is raw beef fat, and birds can eat it. It gives them good energy for the winter. It doesn't freeze in cold weather, either, so the birds can always get at the seeds mixed into it.