I would go with the Scroll of Resurrection deal.

Basically have someone send you Scroll invites.
You accept those, which lets you transfer a toon to their server/faction, -or- to boost to 80th (from whatever level) a toon on their server.
The boosted/transferred toon is raised to 80th, gets all flight skills except for 280% > 310% flying, along with most/all flight paths.

The accounts are automatically given Cataclysm.
I think you get a week of play time as well.
If they (you) pay for a month, the referring account will get a fancy spectral something mount as well.