All kids need a good memory game on hand. Made by sustainable toy company Tree Hopper Toys, Match Stacks offer a fresh, green spin on the modern-day version of the classic game. Each set comes with sixteen wooden discs featuring eight pairs of designs from one of five themes: camping trip, zoo animals, transportation, in the garden, and monster match. Younger kids will also from Match Stacks, before they can even grasp the concept. The little discs will help them learn about each featured object while honing his or her vocabulary and verbal skills. The discs stack neatly in a small, easy to tote tube which would also make a great stocking stuffer.