Bird feeders are always fun to make as you can easily enroll your kids into the process. It is awesome to watch birds coming and it also teaches your children to care for the Nature (which, in turn, makes them kinder, more responsible and eco-conscious).
Here are a couple of nice-looking useful and smart ways to re-use your old plastic bottles into bird-feeders:
1) For
this one, apart from a large plastic bottle, you will also need two wooden spoons that work as actual feeders. The wholes above the spoons will let bird seeds out, but not too much:
2) I fell in love with
this one: the roof looks fantastic! And your kids will love the idea of "Welcome home" message. It must really feel at home there: