I made these four simple stylized textures. Thinking more about the 3d textures for grams in "billboard", for some solutions in game engines (like the Unity3d terrain), or even being used as texture in a 3d bush. And I make them available in the public domain. I hope they are useful for the projects of some of you. Modify them, if you prefer, to better adapt to your needs. You don't need to credit me. Feel free to let me know if you use it on any project, but only if you want to ...