Walmart has little wooden feeders about hmmmmm 7 or 8" tall and 4" wide, two clear plastic sides about 5", with a wooden "lid" that lifts off so you can add the worms. I thought the blue birds had too much trouble to get a worm so I enlarged the lower openings --- easy for me since I have that scroll saw. Very expensive feeders - $5.97 each!!
For me they fell apart very quickly and the cord that secured the box came out within days. I bought new ones and secured everything with super glue and more nails.
http://www.walmart.com/ip/Pennington...eeder/20713364