- The K2 from Iris class used recycleable materials for the entrepreneur day . They used the toilet paper rolls and made coasters, pencil holders and bangle holders. For pencil holders , the bigger paper rolls were painted and decorated with beads , straws and other recycled materials provided by the parents . The coasters were created by cutting the toilet roll core into half inches each , painted , dried , glued together and repainted for the final touch . The lid cover was used as the base for the coaster cover. It was a very meaningful and hard process to create the final products. The children were very excited and managed to sell all of their works .