Скачать или смотреть Wireless Power using Sparks - 100KV of fun with LEDs

I recently purchased an Ark Transformer (or Arking Transformer) - it's a little device which takes in a low DC voltage of 6-9V and puts out around 100,000 volts to make a spark - they're used as ignition systems in gas boilers and also for stun guns. I thought I'd have a go at blowing up some components with 100KV, but whilst I was mucking around, I noticed that it was possible to light up an LED using a portion of the spark as the power supply - no wires needed. After playing around with LEDs for a while, I realised that I might be able to make a regulated DC power supply which was capable of running off the spark. The power supply was a success, so I moved onto a flashing LED circuit using a 555 timer - unfortunately the current draw on that circuit was more than my little spark-powered power supply could provide.

Can anyone think of a fun circuit which can run on less than a milliamp?