We designed donation stamps. Each stamp sheet shows an endangered animal, illustrated in a beautiful and classic biology-book-style. To use the stamp, you have to remove the "trophy" - and destroy the animal. The stamps could be ordered online and were printed on demand. With every stamp the message reached at least two people - the sender and the receiver of the letter. And every stamp meant a donation of 50 cents.

More than €36,000 in donations for Pro Wildlife. 500% more clicks on prowildlife.de. And over 20 newspaper articles about the campaign, not to mention countless blogposts, Facebook likes etc.