is it washable crayon?
i'd try to get as much crayon off the dryer walls as possible (hot water, microfiber cloth), and just put the rest of the clothes thru the wash again (repeating until the crayon washes out before i'd put it into the dryer again),
you could also use an iron and some paper towelling to melt some of the crayon off of the clothes (the melted wax will wick into the towelling)
i know it's not natural, but i keep a bottle of shout for laundry emergencies--they have a phone number that you can call and they will give you laundry advice, including more natural solutions than using the 'shout'
good luck~!!!
oh, and
http://www.google.ca/search?q=crayon...ient=firefox-a just in case!

