My stepchildren's 3rd grade teacher does a "wax museum" in the classroom that is very similar. The students pick a subject, research them, create a short and hopefully memorizeable biography and dress up as them with a few props, then the families come in on Wax Museum Day and press the "buttons" on the desks to hear the characters talk.
I was very impressed with the whole thing and the kids really enjoyed doing it.
SoMetHinG WiCKed ThIS WAy CoMEs
What can we teach you about fear?