Mousse-filled Withce's Hats

I made these last year, but instead I made up the family favorite, Chocolate pudding. It was the hardest thing to make last year because I couldn't find the right cones or cookies. But they still were the hit of the party. You can see pictures from last year HERE.
Mousse-Filled Witches' Hats
1-3/4 cups heavy whipping cream, divided
1 cup milk chocolate chips
4 squares (1 oz. each) semisweet chocolate, chopped
1/2 tsp. shortening
1 pkg. (4-3/4 oz.) chocolate ice cream sugar cones
Halloween sprinkles
12 thin chocolate waters (2-1/4 in. diameter)
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In a small saucepan, bring 1/2 cup cream to a boil; remove from heat. Stir in chocolate chips until smooth. Transfer to a bowl; cool to room temperature, stirring occasionally. In a small mixing bowl, beat remaining cream until stiff peaks form; fold into chocolate mixture. Cover; chill.
in a microwave-safe bowl, melt semisweet chocolate and shortening; stir until smooth. Dip pointed tips of ice cream cones a third of the way into melter chocolate; roll in sprinkles. Refrigerate until set. Just before serving, spoon mousse into cones. Top each with a chocolate wafer. Invert onto a serving platter.