A heating pad that doesn't turn itself off every twenty minutes.
I have chronic back pain, sometime back spasms. The only thing that really helps is a heating pad. If I have spasms I have to use it for hours at a time. Heating pads used to heat up and stay at the chosen temperature until you turned them off. The only new ones I have found turn off after twenty minutes whether you want them to or not. The only way to avoid this is to turn the pad off and back on before the twenty minutes are up. If you forget to do this, you must get up, unplug the pad and plug it in again to restart it.
I know this is a safety feature designed to keep people from falling asleep and getting burned but ... When one is in the throes of back spasms, one does not want to move. If I miss the twenty minute mark and have to get up and pull the plug out, etc., it's gonna hurt.
I wish could find one that wouldn't shut off.