Nature patterns: Clouds
Scatter leaves, flowers, clouds, pebbles, ferns or grass across a tile that repeats without a seam. Every motif is drawn fresh from your seed, so no two patterns are quite alike.

Sources
- Robert L. Cook, Stochastic Sampling in Computer Graphics, ACM Transactions on Graphics 5, 1986. Dart throwing, the Poisson-disc method the nature pattern maker uses to scatter motifs evenly without a visible grid.