The RAT is possible. I have to figure out what RPM it runs at. I believe it runs at a high RPM. They would have to remove the blades and put a different configuration on it as they will only experience 20 knot winds, not 200 knots.
From what I can read, it seems the RAT has one of these 28V AC alternators in it. Not totally sure.
I also don't know how complicated it is to remove the RAT. They don't have all the tools a regular aircraft mechanic might have.