I am going to be fostering two-week old kittens and their mommy. A recommended item is a heating pad like this one, which never gets too hot. I realize this is a long shot. https://www.amazon.com/gp/product/B00008AJH9/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=kitte0b-20&creative=9325&linkCode=as2&creativeASIN=B00008AJH9&linkId=db2ce4f9b1128568b8243ef3d2612fa7