Here's some sand I was messing around with last night, should anyone want it. These POV's are about 2m, roughly eye-level above the ground.
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Go to the internal network to assign your render camera to the sparkle expiration distance shader.
Other than that, it's simply 3 fake stones shaders and a simple power fractal for some cheap ripples.
Hope someone can use it, I've, as usual, got nowhere to put it but it looks half decent enough to share and hopefully give it a good home.
Cheers!