This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Lovely pattern with splattered vintage speckles.
Source David Pomfret
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Fix and cc0 to get the tile this is based on.
Source SliverKnight
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
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 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
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-yellow.
Source Yamachem
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso