How to Keep Squirrels from Getting Into Your Bird Feeder
Bird feeders are supposed to be for birds; but apparently nobody told the squirrels that! I've seen a lot of complex methods for keeping our furry "friends" away from the bird seed (a motion-sensor attached to a garden hose is probably my favorite); but this solution might be a little cheaper and easier. Actually, it definitely is.
It's another classic case of taking one thing and finding a new use for it. Just don't tell your kids you were going through their toy box!