Make your tiered cake look like an under-construction building with cranes and decorative elements to highlight it.
Create a construction site with debris, construction equipment and fondant workers.
Craft an excavator with the cake and colour it with yellow fondant.
Design a blueprint of a large building to top your cake and add a set square, divider and rulers to decorate it.
Make a dump truck with the cake and use cake crumbs to resemble the soil.