Have been working from home since start of first lockdown, for first time in 38 years (and still had a very good year, business wise) so several, to name a few:
Extra hour at both the start and end of the day at home with my wife, i.e. some ten hours a week, great when we live right by the beach, the dog certainly thinks so.
Garden looks the best it has in years.
c6,000 miles less on my car/fuel usage/damage to the environment.
Maintained my normal commuting cycling miles with rides along the coast each morning

(I part drive / cycle into work normally, simply due to time constraints).
Proves you "really"do not have to be in the work based office ten hours a day.
Haven't printed a single sheet of paper since March 23rd, my normal office based usage would be c30 A4 sheets every day.