. . . I'd buy some robots from Fred Barton Productions. Barton's custom 1:1-scale replicas cost up to tens of thousands of dollars each, and boy howdy would I love to have one (or a few) in my theatre room.
In order of preference:
Mr. Barton also creates other replica props, including a 44" C-57D cruiser model and a 1:1 time machine from The Time Machine.