Any drones compatible with a Nikon D5100?

Any drones compatible with a Nikon D5100? - 1

Yes, with a lot of money and work! You'd have to adapt one.
Such a drone will cost more than the camera.
Compatible isn't the right word.
Why bother? They sell drones with cameras.
Sorry, not a good idea.

Big expensive ones, but yes, there are drones with enough payload capacity to carry something like your D5100.

The drone would have to be HUGE and EXPENSIVE to carry a big heavy D5100. This company might have something:

http://www.dslrpros.com/

I would imagine that would be one mighty huge drone.