Invite children to leap into Sunday school. Postcard is great for announcing special events they can participate in. On the back of postcard: "Come, children, listen to me. Let me teach you how to honor the Lord. Psalm 34:11", plus spaces for time, place, and location of event.
Mail or hand-deliver the postcards, which are 3.562 x 5.375 and are sold in packages of 25. Stay in touch with children and their families all year long with postcards. Each postcard has a Bible verse listed.