All mothers out there What do you do to cut expenses with your child?

I am a single mother of a toddler just curious as to know how other mothers make their dollars stretch. Some of the things I do to cut down expenses is I buy my son's diapers by the case-40bucks-Wholesale club, and it last a whole month. Wipes too. I also will suggest family members to buy him the clothes that he needs around christmas when they ask what to get him. I get his DVD movies at Walmart on the $5 shelf, or rent them from the library, kids movies are free. Toys I rent from Parents As Teachers resource center, he can keep the toys for 2 weeks, then trade them in for something else. He has toys at home, but most of them he doesn't even play with. I buy his clothes out of season, or receive hand-me-downs, and I do hit up the thrift store from time to time to get him some nice name brand stuff for under a $1. Food, we eat at home. I will spend money on a good pair of NIkes or jordan and a nice haircut, but everything else I try to budget. What do you do to cut on expenses? HOw do you economize with your kids?