So far today, Ive been offered three quests from Oracles.. I am stubbing out now - will update with results:

Will of the Titans
Control Vehicle/Kill Stuff: Get hold of a crystal then a "take over a guy and kll multiple mobs with him"

I will see about looting crystal on all then using my "fly near my main on alts" technique and see how bothersome it is

FOLLOWUP: Looted crystal, used at shrine (31,75) on main and became cat with usual vehicle thing. Cat does CRAP damage. Ended up just forgetting about taking over - just killed 50 of the mobs with my usual team. Ive got a pally tank and a holy priest what worked best for me was lay down consecrate, with Retribution aura up and KEEP THAT PoM FLYING. 50 mobs in less than 5 minutes. Forget the cat - the thread on thottbot says same thing.

Song of Reflection
Use Item at location: Fly to four locations and use a musical instrument

Looks VERY multi-boxer friendly

FOLLOW UP: Just fly to the tops of the pillars, land, and use the didgeridoo with one toon - all get cred - easy sauce


Appeasing the Great Rain Stone
Companion Dig-up/Collection: Call out Lafoo and run around the area to have him dig up "shiny things"

In practice, this is a 'run around with a companion who will dig up items so you can right-click collect them' quest. It means you need to collect 6 items on EACH toon. As an added bonus, the items he digs up are often bugs (which he runs around and eats, sometimes aggroing nearby mobs) and other useless stuff. Expect a 50%-ish hit rate for the right kind of thing being dug up... very multi-boxer unfrendly.

FOLLOW UP:
  1. I found that if I stayed mounted, Lafoo didn't seem to bother chasing down bugs if he uncovered them... so stay mounted and only unmount if he uncovers a quest item.
  2. Averaged about 50% hit rate across 3 toons
  3. 21,400-ish exp at lvl 79