We decided on a Lego theme for my recent 6 year old this year...mainly because all he wanted for his birthday was LEGO!
So, a cake is born: We used 2 sheet cakes, 9 X 12, and layered them, for the Lego brick. Then, we used 6 cupcakes and turned them upside down for the Lego "buttons".
We added a real set of Lego people that lounged around the top of the cake. My brother meticulously wrote "Lego" with icing on each of the "buttons" in the correct font.
My little guy just loved everything about it, including the fact that he got to keep the Lego guys from the cake.