ดินน้ำมัน
Acknowledgements
Image source
https://pixabay.com/th/photos/plasticine-%e0%b8%9e%e0%b8%b4%e0%b8%a1%e0%b8%9e%e0%b9%8c%e0%b8%aa%e0%b8%b5-%e0%b8%a3%e0%b8%aa%e0%b8%a3%e0%b9%89%e0%b8%b2%e0%b8%87%e0%b8%aa%e0%b8%a3%e0%b8%a3%e0%b8%84%e0%b9%8c-4847715/