kid art: Kid art is the BEST! I love using my girls’ artwork to make memory games as presents for their cousins and friends. You can also cut game pieces from larger works of art, or just collect their smaller drawings until you have enough for a game set.
can lids/jar lids: If you’ve got a can opener that doesn’t leave sharp edges, check out the can lid memory game that The Brooding Hen made. Otherwise, try using Mason jar lids, storage jar lids, or the plastic lids from yogurt tubs.
seashells: If you spend a little time at a favorite beach, you’ll notice that many of the shells that you find are VERY similar. Chasing Cheerios took advantage of this to make a quick and easy memory game using seashells and stickers; seashells can also be drawn on, for a game with even more sustainability and handmade flair.
rocks: Rocks can also look pretty similar, and can also be easy to draw on. Because the texture and heft of a rock is so different from a piece of laminated paper, a memory game made out of rocks can really be a fun change for kids.