I poop at work. Get paid to poop, save money on toilet paper! Win/win.
One of our cars has no air conditioner. Saves gas, cost less to buy/maintain, improves badassity. Win/win/win.
Both of our cars are old and "crappy." Cheaper to buy, cheaper to maintain because I don't care how they look! Win/win.
I roll my own raw dog food. Healthy happy dogs so fewer vet bills, and their poop no longer needs scooping in the back yard because it disintegrates quickly, so no bags of poop in the trash. Win/win.
I save grocery/produce bags for picking up dog poop when traveling or otherwise necessary. Less space taken up in our trash/recycling, and no buying of poop bags. Win/win.
Our computers are built as "from-scratch" as possible. Saves money on the front-end, and on the back-end, as future upgradability/refactoring is possible to extend useful life. Win/win.
I work out at home. Saves me from having to pay for a gym membership, and saves a bit on the heating bill in the winter. Win/win.
I cook healthy food at home. Saves money short-term vs eating out, and saves on future medical bills. Win/win.
I wear shoes until they're well past the beat-to-hell stage. Slows down shoe depreciation and is more comfortable because new shoes suck. Win/win.
I like feedback loops. Not good to have them working against you.