This includes a puppet show ( to which th stage and puppets are booked , but not the puppeteers ) , a carrot cake ( much to Grandpa Boris ' displeasure , hoping it will be a chocolate cake ) , and a really elaborate invention from Tommy 's dad , Stu ( the Hooverama ) . This includes a puppet show ( to which th stage and puppets are booked , but not the puppeteers ) , a carrot cake ( much to Grandpa Boris ' displeasure , hoping it would be a chocolate cake ) , and a really elaborate invention from Tommy 's dad , Stu ( the Hoverama ) .