Line 3 baking sheets with parchment or wax paper. Place melting wafers in 2 resealable plastic bags. Heat bags in microwave on medium heat, until wafers are melted, about 2 minutes. Snip a corner from bags, and pipe trees onto lined baking sheets. While branches are still soft, attach leaf sprinkles. Refrigerate 5 minutes to set. Makes 24 trees.
Tint frosting orange, and frost cupcakes. Insert trees into tops of cupcakes. Sprinkle with cookie crumbs and leaves.