If Buck and I economize any more we'll be having pine floats for our meals...toothpicks and water.
I ALWAYS make a list and stick to it. Have generated a custom one on the computer and it's arranged like the aisles in the store are. I take one day every two weeks and do ALL our shopping, mainly because our shopping "place" is 30 miles away. I have my list, small solar calculator (for comparative shopping), store ads, coupons, discounts, etc. in a notebook. I take $190 in cash and when it's gone, I'm done. Have never been an impulse shopper, so aren't tempted by things on the end caps or at the check-out.
When I say I buy everything on my shopping trips, I mean everything. Meats, fish, poultry, dairy, produce, canned and dried goods, detergents/household cleaners, paper products, pharmacy/hygiene items, pet foods/litter/treats, coffee/tea/beverages, everything we and our furry children consume. If I can't/don't get an item on a trip, I have to wait two weeks. That's how it is and has been for nearly 10 years. By now I've gotten into a "groove" and have learned some lessons on shopping creatively and carefully.
I have to plan our menus carefully so that the fresh produce from my shopping trips gets used efficiently and doesn't spoil. It's a bit easier in the summer when I grow some of our stuff.
We eat out 8 times a year - 7 times for lunch on our "date day" once a month, and once for dinner on our anniversary. Don't usually have date day on the months when Buck and I have our birthdays. Save the money to go toward a nice birthday meal. Also don't have our date in November and December. Thanksgiving and Christmas, you know.
Except for my regular shopping trips and our eating out excursions, we don't do much more driving. Our shop is 4/10 of a mile from our house, so gas isn't too much of an issue when it comes to getting to work. Buck drives to the shop 'cause he has walking issues. On nice days I enjoy walking to the shop.
Don't usually go to movies because we "treated" ourselves to the minimum plan of Netflix, which is more than adequate for our tastes. Also have the most basic of dish service for TV.
Batched our telephone service and our Internet service with the same provider. When we did that, we got high-speed Internet and free unlimited long-distance phone calls, neither of which we had with our old providers. The bonus? Got better/more service and ended up paying less than with the old.
Pay as many bills online and "in hand" locally as possible.
Our house isn't air-conditioned, so no energy used for cooling it. We heat the areas of the house we use most often with a wood stove. I wash 1 load of laundry per week and line dry almost all of it. I can get by with doing such little laundry because I discovered a long time ago that it's more efficient to have about 2 weeks worth of socks, underwear, outer shirts, etc. on hand. Two of us don't generate enough laundry to warrant even a small load, so one week I do linens, towels, etc. and the alternate week, it's our clothes, etc. Works out quite well for us but wouldn't be that easy for folks with more people in the house.
Let the sun light our rooms as much as possible. Otherwise, use very few lights and some that we do use are on timers that are adjusted with the season.
In the cold months, I plan oven meals more often to utilize the oven heat to warm the kitchen. In the warm months, cook outside, use the crock-pot or microwave as much as we can.
Have a 21 cubic foot freezer that I keep filled (more energy efficient) with homemade foods and sale items. Freeze or can things I grow.
Buck and I eat leftovers from evening meals for lunch. Haven't thrown anything out or had any U.F.O.s (unidentified food objects) in the refrigerator in a very long time.
I'm sure there is more, but I can't think of any right now. Buck says I can make a penny scream. Don't know, but I sure give it my best shot.