It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
A chequerboard pattern with a fruit theme. The fruits are from a posting by inkscapeforum.it.
Source Firkin
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Seamless Prismatic Geometric Pattern With Background
Source GDJ
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Prismatic Abstract Background Design No Black
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen