I'm pretty sure they're metal. You also have a little hanger clippie thing to the side of your door. the kind of thing you can clip and envelope into, or hang something around. We hung a green lei (thanks Joe & Joanne) around ours on our first cruise so our door stood out!
Yes, they are metal and fun to decorate. Be forewarned, 'have door decorated, will play... LOL! We had a BD ribbons around our fish to make it easier to find our room and someone decided they would enjoy them more. Go figure!!
It was funny, one day my sister and niece were walking down the hall looking for their cabin, which was next to ours. A cabin steward saw their t-shirts, which matched one of the magnets on our door. The cabin steward said to my sister and niece, "Your cabin is down that way a little farther."
GET UP TO A $1000 SHIPBOARD CREDIT AND AN EXCLUSIVE GIFT!
If you make your Disney Cruise Line reservation with Dreams Unlimited Travel you’ll receive these incredible shipboard credits to spend on your cruise!