Saving Money on Household Cleaners

We all know how expensive cleaning products can be and when they go on sale they can be hard to get your hands on. It seems that if you are not one of the first 5 people in the store you won't be getting the cleaning products that are on sale. So I have started using homemade cleaners for various jobs. Here is my recipe for window cleaner:

1 cup rubbing alcohol
1 cup water
1 T vinegar

I just mix it all up and put it in a spray bottle. It works like a champ.  Do you have any cleaning tips?