Each teacher picks their favorite book from the book fair and then students try to guess which teacher chose that particular book. Could also say "Come take a look at our favorite books!" if you have ordered bulletin board books.
Scrabble Recording Sheet With Tiles- Daily 5 Word Work; I'll use this as a warm-up! I could also put actual tiles on the elmo projector or on each table. It would move a lot faster than a full game, and would encourage participation.