I cut out different color cards, wrote the color on each card and then covered them with clear contact paper for durability. I made two of each color.
So far, I have used thesecards for two different activities.
Matching cards: I started with three matching pairs, mixed them up and layed them out in front of J. I called out a color and he stacked the matching set.
Color Hunt: I layed out all the color cards and a stack of color blocks. He matched the blocks with the correct color card.
Age? 21 months (but they can be used much earlier)
Try Again? Yes (too increase the difficulty, I can increase the number of colors available at once; I can ask him to search the entire house to find items that match the color cards)