Kaleidoscope Prismatic Abstract No Background
Source GDJ
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Just like the black maze, only in light gray. Duh.
Source Peax
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
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
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
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
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin