The streets of New York City, Jake. I have always heard the best place to hide is in plain site.
Depends where you live. Out here the bears, possums and turkey vulture do wonderful things with evidence. If you are closer to the ocean there are lotsa holes in the water. If you're in the city you will have to be more creative.
Dig a hole in front of the local police station, bury it, put a sign up that says no dead bodys here.
First you bring them to the unicorns and ask them to bury it. Then it will appear in your back yard so you tell the cops that they fell from the sky. They might callll you crazy but the body will be invisible!!!! :)
Under sea.
Behind a desk at the DMV... no one will notice.
play games like HITMAN then you'll get different ideas :D
In a Blender :)