Hey guys I found an interesting item with the World Event (Land of the Dead). Its called a Spirit candle. This item you can put on ground counts as in-game object. So saying that I do not know if you guys remember the rocket cluster how you could put them on the ground and block stuff such as the AH/Bank and be able climb really high with them. Well same idea applies here thing is you need a bunch of people to do this cause it has 5 min Cooldown.
You buy it from Chapman the guy outside Orgrimmar at the Grave yard.
Their very cheap so you can buy a lot I do not know if you can maybe keep them after the event good luck.