A cool trick I saw with early Amumu jungle
I recently played with a jungle amumu on our team and he wanted to start with the raptors (which I find pretty weird) and didn't want any help for clearing the jungle.
Turns out, he started with despair (W) and only took the aggro of the raptors before running to the red buff. Because he had Hunter's Talisman, he would basically heal by over 42 HP per second and not lose any health during his clearing. His W would be enough to keep the raptors running back and forth (they lose patience but then they would come back).