I found this great set of snowflake matching cards at Kelly's Kindergarten. (Thanks, Ines, for helping me find the link!) This is such a great little set of matching cards. I love how much it will require the children to use their visual discrimination skills. These are not easy to match, so they should provide a good challenge.
Here is how I set the cards up on the shelf. I was just going to put them in the small white glass basket, but it seemed so small and insubstantial on the shelf that I placed it on a blue tray.
There are 12 matching pairs of snowflakes in this set. I need to go back and make a control dot in the corner of one set to help the children when they lay out this work. I just laid it out quickly so my younger son could match them up and I could take a photo. This could also be played like a memory game by laying the cards out face-down and turning them over to find the match.