This may well be the world`s only discreet logic circuit to generate truely random output. It makes an excellent candle flicker light for your haloween pumpkin, and looks much more authentic than a shimmer light wherever a good a simulated flame effect is required. It flickers even more authentically than a candle in a light breeze.
Here is a 120VAC hot chassis version of the above circuit. This is the one I use to run my pumpkin every haloween. Note that the AC line provides the low frequency oscillator waveform.