Ok, this one is almost to simple to be labeled craft, but has been awesome, so I'll share:
This is a variety of games all in one. First, a set of plates 2 each with the same amount of stickers up to 6 (a total of 12 plates)
3) Sorting: This is the one we work on the most. I will bring our lego bin out and place the plates randomly around the floor. Our older son needs to stack the same amount of lego on the plate to match the stickers. It sounds easy, but it's been a challenge.