I made a flyable Millennium Falcon using vehicle welding. I know MythicalTwinkie made one himself, but I finished mine before I even saw his (although mine looks different enough from his that they can be easily told apart). Mine has over 800 forge objects welded to the banshee. Check it out:
I also have a purely aesthetic version which features an interior & working boarding ramp :
Finally, I have a video showing what happened on many of my attempts to make the flyable version: