Here's an interesting example of type being constructed out of found objects. In this case leaves that have changed color due to the season's change.  These were cut out by the artist Twan Van Keulen.

The cut outs are a very simple sans serif typeface. I thought it was interesting that the these were simply cut out of very common objects, leaves, everyone has access to. There are so many different two dimensional materials out there with unique textures and color combinations that could be used to construct innovative type. The possibilities are endless!