Start with a small threaded jar - I used 4oz jelly jars - but any repuposed small jar would work.
You could make your own DIY hanger for the jar, but I found these (Ball Jar Wire Handle 3 pack) at Joann Craft Store. A package of 3 hangers is about $5 - but use a 50% off coupon and then they are only $2.50. - That adds up to less than a dollar per feeder! Fill them with purchased suet or make your own. Here's the recipe:
Basic Suet Recipe
1 cup lard
1 cup chunky peanut butter
Melt the lard and peanut butter together, then add:
3 cups cornmeal
1/2 cup flour
4 cups birdseed
Tufted Titmouse
Little bit more of a challenge for a Blue Jay to eat suet out of a jelly jar,
but he manages to get the job done. ♥