This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
A pale orange background pattern with glossy groove stripes.
Source V. Hartikainen
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Basic Pattern 2 No Background
Source GDJ
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Prismatic Polyskelion Pattern No Background
Source GDJ
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Geometric triangles seem to be quite hot these days.
Source Pixeden
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Prismatic Groovy Concentric Background 4
Source GDJ
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin