Materials:8 CD's or DVD's, and 8 plastic coated paper clips.
Tools: Drill with bit, and piece of wood.
I put both CD's back to back and drilled through them at the same time. It made the paper clips much easier to attach. Corded drills work better than battery ones. Remember to wear eye protection.
I like to use the plastic coated paper clips to link the CD's as I live in Oregon where it rains a lot.
Put paper clips through the holes in both sides of the cd's. Make sure the CD's are shiny side out.
Finished Recycled CD Garden Bird Deterrent. I made mine 4 CD's long, but you could go longer or shorter to fit your needs and/or level of patience. I plan on placing this and it's three friends out in my garden later this spring.