Advent: Handmade Christmas Day 2

Under the evergreen garland on this wreath, is a vine wreath that I made from Virginia Creeper growing at my parents' former home. For a larger wreath, it looked a bit skinny, so I decorated it one year with the evergreen garland, a bow reused from a gift basket, some dried orange and apple slices (I experimented one year with my food dehydrator), cinnamon sticks, pine cones from a tree we had in a former yard and some fake red berries from other decorations past their prime.

My dilemma this year is how to hang it--we just got a new front door and there's no wood to screw a hook into, and it will be exposed to the elements without a screen door. Any ideas on the best way to hang it on a fiberglass door?