Add a 1/2 cup of baking soda to the wash when you add your regular liquid detergent. The baking soda has been known to give you whiter whites, brighter brights, and odor free clothing.

Quickly rinse acid spills and then sprinkle baking soda on your clothing to neutralize the acid and prevent damage. If the acid is already dried, you can still neutralize it with baking soda before washing and prevent further damage in your machine.

If crayons have accidentally been washed with a load of clothing, there may still be hope for removing the art.   Rewash the clothing in the hottest water allowable for the fabric, adding a 1/2 box to a box of baking soda.
Baking Soda Tip for Aged Linens

Baking soda can be very effective at removing stains formed by age. Because it is a natural cleaner, your older linens can be trusted to be whitened and brightened by its effects.
 

Instead of using fabric softener, try adding a 1/2 cup of baking soda to the rinse cycle.  It acts as a natural softener and is gentler for those with sensitivities to chemicals in their laundry.

Add baking soda to the rinse water to help remove odors from clothes.

Use a baking soda and water paste to wash the inside of your machine. The next time bubble gum or candy canes accidentally get washed, you can use baking soda and a plastic tool to gently clean the stuck on surprises off of your washing machine.