I saw that one... quite cool, and they are just gonna get more efficient. Some day, it will be an option (app) on commodity watches, phones, etc... just a matter of efficiency, etc..

I used miners in the past to dry laundry in winter... it worked quite well but was just too noisy. So, having stuff that can dissipate a lot more energy via quieter or passive cooling, will be an important feature for people to adopt more.