Glue the cake tiers together, stacked and centered on top of one another.

Arrange the candy bars around the tiers of the cake. Secure each candy bar in place with double-stick tape.

Place the plastic glass on top of the cake and fill with M&Ms. Place a mirrored sphere on top of the glass. Place three more mirrored spheres around the glass.

Glue curly gift bows on top of the cake, between the mirrored spheres.

Wrap lengths of ribbons around the tiers, gluing the ends of the ribbon together to secure around each tier.