You're right, the Voodoo Doll isn't a "Levitation" and really don't belong in this thread.
What William has been trying to avoid stating is simply this, look into a system known as PK Power (Chuck Leech). I know E sells the basic kit for doing this sort of work I forget their price however. It can be a bit expensive due to the cost of materials used in making the primary device; even whole-sale I can't get it for much less than $100.00. While this system is a for certain asset, it has its drawbacks (Pay Attention to the Warnings).
Now, if you decide that you want to do "real" levitations on stage, let me know, I'm far more familiar with them than I am this little stuff ;-)