Some simple things we do:
- I pack lunches for my family (in reusable containers, so a box of ziplock bags will last us for YEARS). Saves money on dining out expenses AND packaging expenses.
- I use collapsible wooden drying racks to hang clothes up to dry - even if I just leave them on the rack INSIDE the house in the middle of winter, it'll cut down the amount of time I use the dryer tremendously (typically I only run the dryer for about 5 -10 minutes per load instead of 30-45 minutes - just long enough to get rid of that "crispy" texture that many folks don't like about drip-dried clothes).
- get acquainted with your public library! Our 6YO twins LOVE library time and we love how they can read tons of books and bring them back to the library (they usually only want to read a book one or two times anyway) instead of paying lots of $$ and then having to figure out where to put all the books. We borrow DVD's from the library instead of going out to movies, too.
-get to know your local secondhand stores. Our library's "Friends of the Library" store has tons of excellent books (donated by people in the community who are clearing out their bookshelves) in good condition for a fraction of what they'd cost new.
- check clearance racks for kids clothes one size up. I've found things like girls leggings for $2-$5 not only in stores like Target but McCalous as well. I have a clear plastic bin for storing my finds so I remember to get them out the following year.
- check clearance aisles for birthday gifts. Arts and crafts stuff are big with my girls' friends and I stocked up on a bunch of craft kits (paint your own jewelry box, decorate your own scrapbook, etc.) that were 33-50% off. I keep them in a couple small moving boxes in the closet and when there's a b-day party coming my girls "shop" in mommy's craft sale box to pick a gift for their friend.
- Have a few easy-freezy meal ideas, like uncooked chicken pieces or pork chops in marinade in ziplock bags (just defrost and bake- I take the ziplock out the night before and put it in the fridge in a pan of water to defrost, it's usually defrosted enough to cook by dinnertime), or make a big batch of chili or lasagna and freeze a portion of it, so that you have stuff on hand that's a no-brainer to make when you don't feel like cooking. Also it's healthier and less expensive than frozen "convenience foods".
-buy dried beans and soak/cook them and freeze portions of the cooked beans for future use.
- be wise in your bulk (Costco) purchases - if some things are too big for your household, you might see if there's a friend or neighbor you can split those 20 lbs of potatoes with so you don't end up composting half your purchase.
- fun family activities don't have to be a big expense. State, regional, and national parks have many fun and educational programs that don't cost a lot of $. Family memberships to a local museum or zoo can be a great deal if it's a place your family loves to go to (we have a membership to the Chabot Space Science Center and, considering that we've been there at least a half dozen times since we purchased our membership, it's been a bargain!), plus your membership in one place often can get you discounted admission in other places.