Another quick warmup game: Boggle

So maybe you've heard or seen the game "Boggle?" You can make your own version for a quick game in class to use as a warm-up. Make a grid on the board, maybe 6x6. Then fill in the squares with common letters. Then the students make words, with at least 3 letters. Each word can only use each letter once and the letters must be touching. You can go diagonal, up, down, whatever.