This cake represented her birthday gift and trip to Lego Land. Computer screen is styrofoam; I glued two wooden dowels at the bottom to insert into the cake and glued with extra icing. Fondant keypad (can you say labor intensive!). Used other half of 1/4 sheet to make the large Lego cakes with cupcake bottom for tops. Problems: icing bubbled on the styrofoam; tips? Little girl loved it and the matching Lego cupcakes to go with it.