Batiking is a method of dyeing a fabric. You use a wax resist to keep areas of the fabric for being dyed. You can do multiple colors and color mixing. I did a quick search and there are some nice batiking instructbales to check out.
wax does have a high oil content, this is why you get some amazing smells from the bars. However, once the oil and fragrance has burned out you are left with the high quality wax. This wax can be used as your was for the resit of your batiking.
Many thanks to one of our districts art teachers who gave me this great idea!
(Examples of batiking here were found using a google image search)