Melt white-chocolate melting wafers. Dip pretzel rods in chocolate and spread it over each one with a spoon. Let dry on parchment paper, about 20 minutes. Melt semisweet chocolate chips and transfer to a pastry bag fitted with a small plain tip. Pipe eyes, buttons, and twig arms as shown. Let chocolate set, about 10 minutes. To make top hats, use leftover white chocolate to "glue" together licorice coins and licorice gumdrops. Cut strips of red fruit leather for the scarves and use orange Nerd candies for the noses. Attach all to snowmen with white chocolate.