We seem to pick up at least one rock on the way home from the playground. To foster this love for different colored, sized and textured rocks, we'd love to purchase a set of these Bamboo Pebbles by Bambu. They'd make a great sensorial toy to display or to take along in the diaper bag.These pebbles are smooth like river rocks and soothing to the touch. They are made from 100% organically-grown bamboo using non-toxic adhesive. Bambu makes these pebbles from the waste left over from its cutting boards and other pieces. Each package contains 13 pieces. Available here and elsewhere.