[sdiy] simple lfo circuit ?

[Mountain Man]

I'm looking for a very simple lfo circuit.  I want something that I can
use for clocking a sample&hold, with optional output for routing
elsewhere.  Something that produces sine or triangle output with a
single rate control would be perfect.  I've seen references to an lfo
from the "Moo" synth, but can't find any schematics.  Can someone point
me to a circuit diagram of this or something comparable?

Thanks,
Elby