Instruct the US Fish and Wildlife Service to NOT destroy the reserves of illegal ivory. Instead, commission an artist to create a gigantic statue of a bull elephant sodomizing a poacher with ALL of that ivory.
A huge statue.
Never sell this statue. You'll effectively make the ivory unusable, yet preserve the glory of these majestic beasts.
OK, if sodomizing is a bit too much, then how about a heard trampling poachers? Anything where the elephant gets the upper hand.