Believe it or not there are uses for that old wax, there are even individuals who would gladly take it off your hands!
Step 1: Batiking
Scentsy 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)