There are so many ways to save in the laundry room.
Lets start with the washer....wash clothes in cold water and cold rinse, make sure to wash full loads but do not over stuff the washer as the agitation is what helps to clean the clothes, experimenting using less of the recommended amount of detergent seeing how far you can cut back without interfering with the cleanliness of your clothes, research the prices of detergent and determine a set price that you will allow yourself to spend (example: I never pay more than $2.99 for a 32oz bottle of detergent and I use 1/2 of the recommended amount per load unless clothes are extremely dirty), instead of buying laundry detergent you can always make your own (which works great if you don't have hard water like me), don't buy overpriced stain removers (use items you already have around the house..dawn dish liquid (food and grease stains), shampoo (body oils), etc.., if clothes are really dirty use 1/2 amt of detergent and soak for a few hours then add another 1/2 amt of detergent and wash. Add vinegar to the bleach compartment and sprinkle baking soda in the wash to brighten, soften and help with static.
The dryer is easy....Don't use it and unplug it. Air dry clothes on drying racks and/or clothes lines, don't use fabric softener sheets as they are bad for the dryer-if you do use them cut them in half, use the shortest setting possible to allow clothes to dry and to prevent dryer running needlessly, make sure to empty lint trap after each load and wash it thoroughly every so often to prevent build up of fabric softener which can cause a fire.
I am sure there are more and as I think of them I will add to this. If you have any tips you'd like to share we would love to hear them.