If we each only have idea, and we keep it we still each have one. They can decorate them. That way I call on every one and am not constantly looking at the seating chart. MyK - I also put nouns on index cards, give one to each child. They write their name on it, add an adjective, pass it on.
Cards go all over the room.
No repeating of words. No using the 'dead words' from tombstone I put on board. MyK - I also call my kids Miss Pink Shirt, Prince Grey Sweatshirt, etc. Saves time, and they do pay attention. I feel that I do a super job of subbing, I just hate the politics part.