Several years ago, my kids gave me a "Mr. Potatohead" type of clock, which was powered by a couple of electrodes stuck into the potato. I expect that it may still be available in novelty shops. As for hearing Mike's potato-powered LowFER signal up here in Aitkin, I still haven't heard the 1-watt version (nag, nag) :-) Lyle, K0LR