Anyone wanting to spend some serious cheese on Panerai straps should head off to Atelier du Bracelet Parisien (ABP) in Paris.
Here are some straps for sale:
1. Stingray
2. Python
3. Ostrich shin
4. L-R: Alligator, anaconda, ostrich
5. Bone scale alligator
6. Racing
7. Mixed bunch
Btw - I haven't posted all the materials they use. I don't agree with hunting endangered species just to put on a watch strap, or anything else for that matter.