Kevin has a nicely documented account of how to weave a purse out of seatbelt webbing.

My wife came to me one day and said something to the effect of: 'I want a purse made outta seatbelts. Make me one.' Now, I had never heard of something like this much less seen one. Keeping this in mind I said I would get right on it. That first product was a few years ago and since I occasionally get requests for them from her friends I took the latest request as an opportunity to document the progress.

Seatbelt Purse — Two Foos (via MAKE: Blog)