3 green and yellow biscuit incense holders, Kangxi period

3 incense holder items for the scholar's desk in green and yellow biscuits, an incense wand holder depicting a child on a qilin chimera, an incense wand holder and combined brush holder representing the He He Erxian laughing twins around a lotus bud, a combined brush and incense holder representing a duck against a lily pad in 3-color sancai enamel (also called egg and spinach glaze), Kangxi period (1662-1722)