When I was in high school I built a toy hovercraft-like-thing that used high voltage and two parallel charged pieces of hardware cloth to move enough air to lift itself off the ground (not counting the power supply which was pretty heavy. Basically the charge differential pushes/pulls ions from one grid to the other and lots more air molecules get dragged along through entrainment - same thing that sucks your shower curtain in when the shower is running.
Thinking that fans (or air movement in general) without moving blades or vanes might be an interesting thing - all be it more interesting to the silence guys than here (and, frankly, thinking that there must be a "fatal flaw" keeping it from being used) I did a web search and came up with
Corona driven air propulsion for cooling of electronics.
I guess it's time for me to get a high voltage power supply...
Anyone already work with high voltage and got pointers for me? Other than "don't get zapped"...? Seen anything appropriate on ebay lately?