Rather than simply opening the hot water tap at my sink, letting cold water run down the drain until hot, I collect it and use it for laundry day to fill the washing machine. I also collect the basically clear rinse water, and use it for the next wash load. Old washing machines had a feature along these same lines. Will hang dry as much as possible allowing for conditions.
I also use a full flow shower head in conjunction with a shutoff. This way I get a nice satisfying shower during wet-down and wash-off, but save a ton of water while lathering up, leaving it off or at a very reduced rate. I'm also a super conservative garbage producer, maybe producing one 13 gal bag a month. My ratio of recycling to trash is many, many orders of magnitude.
I also sweep up many piles of sunflower seed husks produced at my feeders, and turn them into great mulch.
My all gas (heat/stove/WH) breezy/practically un-insulated 1955 2 BR rental home in the heart of the Lake Erie Snowbelt, had a $54 bill last month, and it was plenty cold.
I take the city bus as much as possible, which I enjoy even more since it went to CNG. Just looked, and I have only driven 1200 miles since June of last year.
I reload all ammunition I shoot aside from rimfire, this save a ton of $$$ not to mention resources, especially when I use bullets I cast from scrap lead, and can get many, many firings from the brass case. When the case is beyond use, it gets recycled.