Cheap ($9.99) Infrared
Big Lots ( www.biglots.com ) has “Triple therapy massagers, with interchangeable attachments.”
One is Heated stone, one is Soft gel and the third is Infrared. They are made by pollenex ( www.pollenex.com ?) and are on sale now, $9.99.
Big Lots features close -outs and such, so when they are gone, that is it.
Find your nearest store by calling 1-800 269-9571
Right now I am using the infrared, holding it with legs, and is is about the temperature of a hot cup of coffee.
It may or may not be powerfull enough, but if all else fails, now you’ve got a giant vibrato… body massager.