Here's my list of some things I do to save money on a day to day basis...
-keep shades drawn on East, West, and South sides of the house to keep it cooler.
-air is at 76 during the day and 75 at night ( I tried to keep it higher, but it is just too humid here)
-hang laundry to dry, this is not only a money saver but an energy conserver and it relaxes me to do this...there is also nothing like the smell of line dried sheets.
-we rarely eat out, I cook almost every day and it saves us a ton of money.
-coupon shop and stock up when items are on sale, then I make menus around what I have in the house...not the other way around.
-shop yard sales for my daughters clothes...I pay pennies on the dollar for her clothes. I keep a list in the car with larger sizes I have already bought to avoid overbuying of certain items in one size.
-I buy a lot of stuff secondhand. I go to estate auctions and yard sales and pick up high quality antique furniture for cheap and refinish it myself if needed.
-I have been known to peek in the magazine recycling dumpster when I drop off my papers and grab a stack to take home with me

Don't worry...it's not filled with gross garbage...just tons of magazines that people don't want anymore. And, no, you don't climb in, usually it is full and you just reach in and browse. I call this "recycling"
-we use bath towels several times before washing them
-we have bartered for lots of goods and services...electrical work, produce, landscaping, babysitting. Don't be afraid to build a rapport with people in your community...especially small business owners or tradesmen. Just tell them what you have in mind, the worst they can say is no.
-www.freecycle.org is a great way to recycle things you don't need and you can receive things someone else doesn't need, all while keeping landfills a little less full.
-I have stopped and picked things up from by the road before...most recently was a old record player console that my sister cleared out and painted to put her tv on and store movies in. It looks AWESOME and was free.
-Aldi is great for buying staples and other things that don't go on sale very often at your regular grocery store. The quality is good and prices are very cheap.
-Go to the library for books, movies, and books on tape for long trips. I can't tell you how much money I had been spending on books and movies that I read and then didn't want to read or watch again. Make sure you take your children, and encourage a love of reading. My dd is two and her favorite place to go is the library! She sits in a beanbag chair and "reads" (out loud, but quietly) to herself. She LOVES it!
-When we do get takeout food we usually get chinese and either eat early to get the lunch prices or get one meal and all share it. Dh, myself, and dd can share a combination meal and still have leftovers. It usually costs less than $9 for the three of us.