There is a circuit (really easy) in Thomas Henry's Electronic Drum
Cookbook called the "Repeating Trigger Generator" that does something
like this...
...
> > And a really wild crazy idea....
> >
> > Anybody seen "Mouse Hunt"? Remember the scene with all the
mousetraps in one
> > room? (Hang with me, I'm getting there...) The first mousetrap is
triggered,
> > and that triggers two or three others, and those....and you get
this whole
> > "scatter" effect of mousetraps going off on an random exponential
curve
> > until they're all done.
> >
...