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
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
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
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
A seamless pattern formed from background pattern 102
Source Firkin
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
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Prismatic Snowflakes Pattern No Background
Source GDJ
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman