Oh wow....I agree....impressive, but a little scary, too! I have so many questions about this clip.
Doesn't it burn her fingers to move that hot light bulb around all the time?!
I'd be concerned that I'd spend more on band-aids than light bulbs.
My Grandma used to re-use boiled water, although not to this extent. When Gram cooked pasta for lunch, for instance, she'd often put the colander over a larger pot to use the water for cooking vegetables , rice or noodles again later in the day. I don't think she ever used it more than twice though.
I like these clips about people who practice hardcore frugality because even though I might not follow their examples exactly, they do spark the imagination and inspire me to look at my own habits.