Here is the pan I used for the pot - it's Wilton's Sport Ball pan. You bake each half ball, and then stack them to make the whole sphere. I just simply cut off a small portion on the top, and after icing it with black frosting I piled some sugar cookie "coins" there. The shamrocks and the "leprechaun" are cookies too, of course. I'm not too pleased with the way the leprechaun looks - Dad keeps calling it a snowman. :) Oh well.
Anyway, that's how I made it!