The image depicts a seamless pattern of a snow crystal.I referred to a book called ”sekka-zusetsu” or "雪華図説" which means an illustrated explanation about snow crystals.This book was published in 1832 (天保3年) or Edo period.For more about "雪華図説",see here:dl.ndl.go.jp/info:ndljp/pid/2536975
Source Yamachem
A seamless background texture of old cardboard.
Source V. Hartikainen
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
A new one called white wall, not by me this time.
Source Yuji Honzawa
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Prismatic Groovy Concentric Background
Source GDJ