We don't make a lot of big purchases, so the little things we do to save money really count. Simply buying things used can save TONS of money, especially when they can be big purchases. Accepting hand me downs for DS, in clothing and toys & baby equipment/accessories, has saved us LOTS of money. Cloth diapering has saved us a lot of money. We use mostly flats, prefolds, Dappi covers and wash cloths as wipes. I did just get a smoking deal on one size wonder wrap covers for $4 each, that will last my DS as well as my new baby through the diapering stage. I LOVE them. And it's a lot less expensive than buying diapers and wipes on a regular basis.
One thing that we won't buy used are car seats, but we shopped around and were able to use a coupon for 20% off. When we bought DS's car seat, Toys R Us was giving coupons for 25% off with the donation of an old piece of baby equipment.
To touch on things like laundry detergent, we'd been buying Purex Free & Clear (DS has incredibly sensitive skin) at $5.77 for 100 oz. I recently discovered this recipe for extremely cheap liquid laundry detergent:
I can't say enough good things about this recipe. There are only 3 ingredients, all cheap and all found at Walmart. A container of Borax was $2.98 and the Washing Soda was $3.24. Fels-Naptha Soap was 97 cents a bar. Following the recipe, when all was said and done, it cost us less than &1.70 to make 10 gallons of liquid detergent. That's less than 17 cents a gallon. It was so easy to make, not at all time consuming, smells nice and clean and I LOVE using it! Absolutely! In fact, it brings me great joy. We usually do a load of laundry a day, plus a load of diapers, so we go through laundry detergent. It also cuts the shopping bill because things like cat litter and cat food can be expensive. It's nice not to have to add laundry detergent onto the bill, especially when we feel so much better about the detergent we make. Honestly, it's so cheap that I feel like it's almost free, in both labor and cost.
We also clean with baking soda and vinegar. It works well and it's wonderful not to have to add cleaning supplies to the shopping list--and not to have the chemicals in the house. Added together the little things really do add up, at least for my family. And I find we can save the most there because even though they cost less, we purchase them more often. Things like car seats (which for us is a bigger purchase) aren't bought very often. (But we try to save on those purchases, too.)