Caring for elderly parents in the hot weather

Share your ideas about the practical side of caring.
Greta - brilliant! Thank you! I had no idea they were still made. They do seem potentially dangerous, I must say, eg, if they were left on and lying on a bed, but then again, I guess so are electric hair curlers etc.

I just haven't seen them in the shops, or on those carousels where they sell travel gadgets etc.

Thank you! I shall buy one. :) :)
No, nor did I. 'Immersion heater' - that's what we called them.
On a miniature scale! (Cos I always just think of the large immersion heaters buried inside water tanks!)

Again, thank you. (I don't always drink tea when I'm abroad, but I like to know I can if want to! :) )