The first player to take a turn chooses another player and asks them if they have any cards of a certain value.
Just remove one card from play so there is one card without a pair. Another option is to play with cards designed for Snap or Memory. These are all the same game, just with different themes. Use a standard pack of cards with the Queen of Clubs removed, or buy a special set of Donkey or Old Maid cards.
How to Turn Chores Into Learning Opportunities for a Child With Special Needs How to Play