I found this simple "OAUGDP" plasma panel experiment. It's quite a simple device but it looks cool in my opinion! ;D Has anyone tried to built anything like that? Anyway, nice use to a unused ignition coil lying in a junkbox...
http://jlnlabs.imars.com/plasma/html/s_gdp1.htm
http://jlnlabs.imars.com/plasma/html/oaugdp.htm
http://jlnlabs.imars.com/plasma/html/s_gdp1.htm
http://jlnlabs.imars.com/plasma/html/oaugdp.htm