To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Spice up your next school project with this icon background.
Source Swetha
A seamlessly tileable pink background texture.
Source V. Hartikainen
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
A bit strange this one, but nice at the same time.
Source Diogo Silva
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A heavy hitter at 400x400px, but lovely still.
Source Breezi
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis