So among my full to bursting bags on all of my characters, one thing the high level ones pretty much all have is the Skyguard Drape (or the caster equivalent thereof). Even my Death Knight has enough skyguard reputation to have one. I figure if I ever I have some need to fall from a great height, I can just strap it on real quick and jump, and it will always be there just in case the opportune moment arrives.
But here's the problem: I have never needed to use it. Not even once.