Ditch your old dryer sheets! Make your own by cutting up an old tshirt and placing the pieces in a resealable bag with a 1/2 cup of white distilled vinegar and a few drops of tea tree oil/grapefruit seed oil.

 
Get crayon stains out of clothing by rubbing them with an old toothbrush dipped in vinegar. Then wash as usual. Source

Vicki Lansky, "Vinegar: Over 400 Various, Versatile, & Very Good Uses You've Probably Never Thought Of." 2004