You sir do a good job on creativity with creation. I just love it when a person can walk up to some thing like that go home and find that product in there own home and never see it the same again. When your able to leave that kinda mark on some one, you have truly scared them, even if they didn't scream.
I made the cage for my character from galvanized hanger strap, various machine screws, and spray painted it with a "hammered look" spray paint. I added an eye bolt to the top with lamp chain hanging from it for a clanky, clunky effect. All this stuff is available at most hardware stores.