So from time to time, I find it useful to use piezos for something, usually for input transduction (ie. as a contact mic). In these cases, I find myself improvising some sort of setup using alligator clips and spare audio jacks, which can be flimsy at best.
Tonight I decided to hack up a stereo cable and make a dual piezo for my Zoom H2, as I am planning to do some recording that might involve different surfaces and other lovely sounding items in the near future. Simple stuff, I know, but it's effective.