Solving crossword puzzles in group settings is so much fun!
Print themed crosswords from Golden Carers or make your own! Alternatively, buy a junior crossword magazine or book, the small ones with 11 x 11 places. I usually reproduce the puzzle on a white board but you can also enlarge copies of it and hand out a copy to each resident. The local suburban weekly newspaper is a good source of crosswords.
Encourage participants to think about the clues, give them the first letter of the clue or elaborate on the clues to help reveal the answers.