The children carefully put sunflower butter all over the pine cone, then roll it in wild bird seed. Once covered with seed, each child finds a special place to hang the feeder.
While we are making the feeders one can almost feel the birds circling closer and closer. I think they've come to expect this each year. As soon as the children turn their backs, the birds are all over the pine cones, and within just a couple days, the birds completely pick each feeder clean.
You can see the progression here.