Do you have one set of cards taped to chairs, and distribute duplicate cards to students as they walk in for randomized seating? Do you have a left side/right side of the room labeled for Total Physical Response (TPR) groups? Try adding these for novelty…
Instead of cards taped to chairs, just shuffle and deal to students at the start of class (while they’re reading the one thing you’ve typed up?). Student pairs find each other, and either work together, or just sit next to one another for randomized seating.
Print and laminate images/names of things from the target language-speaking world. Keep them organized, and grab a new set every few days/week. For example, my room is labeled Rome and Pompeii for left/right, but I have other sets of cities, monsters, heroes, authors, social classes, etc. tucked away in a drawer. Next week, I could distribute 1/2 social class pulārēs and 1/2 optimātēs to the class, and have each sit on different sides of the room. This both mixes up the seating as well as gives new groups for TPR, etc. For small groups, say, One Word At a Time Stories (OWATS), I could distribute the chariot racing factions Alba, Russāta, Prasina, and Veneta, or just combine any pairs already formed, etc. This is just one more way to infuse target-culture into your class.