During Hyjal on my Shaman I get bored when I sit out generally people wait outside by the meeting stone.
There is a level ~60 Dragon that flies around to the left of the cave (Opposite side of Archronos)
It has a Swipe attack that hits more than 1 targets, if you can get people to 'not' kill it while its attacking you can heal yourself while its on you next to an AFK person. EVEN your own faction.
The hard part is making sure people wont attack cause there are some people that hate others having fun.