They sell these tins at craft stores in the wedding section (use a coupon to get a good deal) attach strong magnets. I got a metal board from Ikea and they just magnet on there. You could also paint a cookie sheet any color you like and use that.
This papier mâché Scandinavian star gets a lot of character from scrapbook papers adhered with DecouPage. Finished off with a button, it adds the perfect touch to any Christmas tree. Use any scrapbook paper to match your theme.