Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
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
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
The name is totally random, but hey, it sounds good.
Source Atle Mo
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
A version without colours blended together to give a different look.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo