• Use ceramic in winter, or add a cut camelia leaf.
• Add incense before the guests arrive, too.

Apparently, there is such a thing as the 形物七種香合:

1. 呉須周茂叔
2. 祥瑞 蜜柑
3. 瓜
4. 瓢箪
5. 古染付 牛
6. 屏風箱
7. 祥瑞瑠璃雀 (利休 used one like this according to Burkus)