ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A heavy hitter at 400x400px, but lovely still.
Source Breezi
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A bit strange this one, but nice at the same time.
Source Diogo Silva
Adapted from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Black And White Floral Pattern Background from PDP.
Source GDJ
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin