Butt Spelling Bee
For 2+ players.
Players take turns being the speller. The speller then thinks of their secret word.
They go to the front of the room, then turn around so their butt is facing the audience, and spell their secret word by writing it in mid air with their butt.
The audience yells out guesses for the secret word and the speller repeats spelling it until the audience guesses correctly.
Have a bowl of secret words.
Play with teams; see which team can get the most secret words in a fixed amount of time.