Here’s a survey of various cool techniques for levitating objects and the efforts to commercialize them : Can levitating appliances take off? – CNN.com
* One project is the Malloy hoverbike that I mentioned here the other day:
* Magnetic magic from CREALEV:
* A levitating speaker from Om Audio :
* Levitating arrays of small items with acoustic waves:
How about having your fridge/stove levitate, so you can pull them out easily to clean?
That would certainly be cool and useful, though it would require a thick sheet of iron under the floor tiles.