Where's everyone gone?
Personally I'm for the most part playing the lottery with different materials and experimental conditions (electrolysis) than Mizuno, following Edmund Storms' suggestions from his papers, so what I'm doing isn't really in-topic for this thread. Storms believes that a Mizuno-style burnished material may produce energy in an electrolytic cell as well.
I'm not geared to measure any heat in the watt–few-watts range but if it works it might produce low-level radiation emission which I could detect with a Geiger counter. Since a few weeks ago in different experimental attempts I found it to be sensitive to air flows due to charged radioactive particles from Radon progeny accumulating on its exposed high voltage portions, this time I put it inside a well-closed plastic box that is not exposed to any air flow.
I found out recently that Storms had something similar occurring as well and he reported it in one of his papers in 2012. As an air flow calorimeter is used in the original Mizuno R20 experiment which might circulate air around any radiation detector in the environment, this could be an in-topic observation.