: Various free "I Spy" games and character word searches are available on Paper Trail Design to sharpen the same pattern-recognition skills used in match-3 levels. Physical Paper Puzzles
: Often used in the game's narrative to introduce new "Magical Moments" or events. DIY "Match-3" Party Games Harry Potter: Match 3
For those who enjoy the 3D aspects of the game, there are specific paper-based model puzzles: : Various free "I Spy" games and character
: There are "matching" sheets available on Pinterest that challenge you to match characters to their respective Hogwarts houses. : Lay out black and white 8
: Lay out black and white 8.5" x 11" sheets of paper on the floor to create a giant board for matching-based games, as suggested by Crafting Cheerfully .
For , the popular match-3 mobile game, there isn't a "useful paper" in the digital sense, but there are several highly useful paper-based resources and physical "paper" puzzles that complement the experience: Printable Games & Learning Tools
If you are looking for physical paper activities that match the "matching" theme of the game: