Buy a crate on any level, the ones you can crouch and walk in?.
Then buy a deployable cover and a grav lift, throw the deployable cover in the crate, then throw the grav lift under the deployable cover.
You can be in or out of the crate it doesn't matter, but the crate will soar up to the top of the sky, and stay for the time the grav lift works.
Very nice for sniping if you're inside, have fun.