One of my biggest frustrations with paper planes is getting them to stay in the air for an extended period of time. This video shows a clever way to do just that.

And not only with this get your paper airplane to fly forever, but wouldn't this be a pretty awesome house decoration? Imagine bringing someone over to your house for the first time, and they see a paper airplane flying over the kitchen counter.

Essentially, it's a matter of setting up a circle of fans. I'm sure you'll have to make the correct type of paper airplane for this to work (which, unfortunately, isn't in the video, but you can probably figure it out if you pay close enough attention). Then, after your plane is made, you toss it into the wind tunnel, and there you have it.

The plane then flies in a circle continuously. It might not be "forever," but at least until the batteries in one or all of the fans run out.