I have shared here and have used #6 plastic packaging as shrink plastic. I never thought that the #6 plastic that is like styrofoam as in egg cartons could be shrunk too, but they can! Pop on over to the blog Make it Easy Crafts for the full tutorial on how to make a recycled #6 shrink plastic egg carton heart necklace. Thanks Crystal for sharing this great info. I can’t wait to try it.