Snakeskin
When I was a kid my dad's friend had a pet snake. He once gave me the skin after shedding - it's about 4 foot long, intact and even has the eye coverings - and I've managed to keep it safe for nearly 40 years!
EXif:
Camera: Canon Digital IXUS 70
Exposure: 0.008 sec (1/125)
Aperture: f/2.8
Focal Length: 5.8 mm
ISO Speed: 100
Exposure Bias: 0/3 EV
Flash: Flash did not fire
Date and Time: 2008:10:04 16:15:49