Try a sugar fondant
Hey!
I don't know if commercial fondant is available where you are but it can be melted in a double boiler and piped onto cookies (or they can be dipped into it). If you can't get it you can make a mock version by using icing sugar with just enough water to become a very, very thick icing. Add a dash of glycerine and a touch of glucose. Heat over a double boiler until you reach the desired consistency - do not overheat or it will lose it's shine.
Chocolate ganache is also great on cookies - 3 parts chocolate and 1 part double cream, melt together over a double boiler.
Hey presto!...... Hope you like!:roll: