Pandaren Champions can drop a Small Bag of Goods, a piece of armour or weapon and in some cases a special item.
In the middle of a small pool of water in the Dookin’ Grounds, East of Grookin’ Hill.
Standing amongst some overturned pots, etc. close to the Jade Witch
In one of the caves, down south on Alliance side
Walks through Nectarbreeze Orchard
Stealthed at the top of a cliff in The Thunderwood
Looks like a statue in the Terrace of Ten Thunders