CONCENTRATION
I recently found a description for a Concentration-type board...
Basically it describes a board with a series of cup hooks screwed into it in rows and columns. You attach index cards with holes punched in the top to the cup hooks and can easily turn them over to play the game.
In this example from Fishers of Kids Ministry, two of the cards have the word "God" on them. (Two of the cards have presumably already been matched and taken down.)
Of course, concentration is easily played without a board just using the cards.
Jaymie
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Moderator added a photo.