I like to keep my mini photo pieces in a coupon organizer ($1 store) and in baggies that list the feature function or class of items to be sorted. I like to hold on to the pieces and offer them to him one at a time and ask him to tact the picture before he sorts it by class. OR I lay 5 or so down on the table and ask him "I wear my _____"? having only one item from that class available. These boards are from Teacher Tools and are both dry erase (sort of (; ) and magnetic. One sid is divided by four sections and the other is open (but in the picture I turned it to three by adding thin red tape. These are wonderfully hand little things! All the pieces are printed on cardstock and laminated with magnetic tape on the back.