To make each holder, I used a 4" bird nest and two 18" pieces of wire. I used 22 gauge brown cloth stem wire. You can get both items at your local craft store, usually in the floral department. I was able to make 8 place card holders for around $15. I added a few fake bird eggs for an extra touch, but you could fill them with anything.
Now come on over for dinner, we saved you a place at the table :)