For those windows that get a lot of sunlight in the summer, they will keep your house cooler. Don't bounce checks. If you and your significant other can't quite get around to balancing your checks books, before you go shopping call the bank and see what your balance is. Take care of your teeth, don't chew hard candy, this is probably the worst thing you can do to your teeth. Sugar gets embedded in the pores of your teeth and even brushing won't get it out.
Dentists are expensive.
Tobacco and alcohol are expensive. Doctors and hospitals are expensive. You don't have to pay 200 dollars to have someone else teach your child how to drive. In my state the department of motor vehicles allows parents to teach their children for just 25 dollars. Carpool to and from work if you can.