Ok this is not my work.
This is from swazzle.com but I thought it is so awesomely cool I just had to share it.
Plastic water jugs, muffin pans, plastic to-go trays, gatorade bottles, various electronic parts all painted to look grimy.
I thought the streaks on the windshield was a nice touch.
Then add some lighting.
A few more various pipes and wires, then straw.
More cool lighting effects!
Built high enough the puppeteers can stand up straight.