- kangaroo hide
- cat and dog skins (in China)
- animal blood and bone (used for glues)
- ivory (no surprise)
- human bones
Other popular hides are alligator and crocodile which are produced commercially now for many years - subject to seasonal hunting guidelines. This article on Unethical Furniture goes into more detail on the use of 'unconventional' and sometimes 'unethical' products in furniture and other products and is well worth a read.