During a conference call with my siblings, we discussed gift ideas for my mom. We remembered a family tree that was made using polaroids, and I suggested that I make a deck of family photo cards that could be used to play concentration, or memory, that game looking for pairs, where two copies of each card are placed face down on the floor, and the players take turns looking for pairs. We never managed to play the game in our short visit with 25 family members, but I had fun making it.