Re:Old hat? (Score 4, Interesting)

Yep - easiest way to make ball lightning - light a wide based candle, without any metal in it (no tea-lights!), place it in the microwave, in the middle of the plate. Nuke. Plasma ball appears, candle goes out, and plasma ball remains. Turn off microwave, the plasma stays a few seconds, before descending back into the candle.