A plastic box.
From Create Your Own Story
You grab the box, though you realize that it won't help. You cast the spell again and hits the box, but this time the spell reflects and cuts Alex dress open, leaving her naked. While she's shocked, you charge at her and knock her out instantly. You look around and see what kind of place this is. In one of the books it says that magic won't work on plastic. You carry her to your home.
You put her in a plastic, see-through suit and we have maid nummer four. Who's next?
