Product review (5 stars): Why didn't I know about these sooner??
Like many others, I've spend years using aluminum foil trying to protect and provide easy clean up of the electric burner bowls.  Found these by accident on Amazon, ordered them and love them.  So much easier than fighting with foil.  They are sturdy, but pliable enough to mush around to fit the bowl.  Clean up is so easy and with a package of 50, they will last quite a long time.  Great product, great price.  Highly recommend.