Students choose between a ser or estar conjugation in parenthesis to complete a sentence. They then have to justify their choice by writing a hashtag with the "use" that comes from that verb's acronym.
For instance: "Yo soy / estoy nerviosa. --> ESTOY --> #Emotion"
I use the acronym DOCTOR for Ser (Date, Origin, Characteristic, Time, Occupation, Relationship/Possession), and PLACE for Estar (Position, Location, Action, Condition, Emotion).