These general patterns can be used as textures, normals or media:
agate boxed bozo bumps cubic cylindrical dents fractal function
agate
boxed
bozo
bumps
cubic
cylindrical
dents
fractal
function
gradient granite leopard marble onion planar potential quilted radial
gradient
granite
leopard
marble
onion
planar
potential
quilted
radial
ripples spherical spiral1 spiral2 spotted waves wood wrinkles
ripples
spherical
spiral1
spiral2
spotted
waves
wood
wrinkles