There are lots of wasteful behaviours that I think many companies engage in. Leaving lights on in empty building, shops that heat the street by keeping their doors open, but here at Royal Mail we have large TVs in each office that run all day with nobody watching. The previous one had an off button, but when I do my mid-morning tour of the office turning out the lights I can't find the way to turn this one off. While I know that turning off the lights won't save the planet I do think everyone needs to be paying more attention to thoughtless waste.
On Buy Nothing Day I cleaned the bathroom, made some flapjack and watched crappy Christmas films.
Stay safe. Be kind. Buy nothing.