Colorful Floral Background 3 No Black
Source GDJ
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
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Prismatic Floral Background No Black
Source GDJ
The name is totally random, but hey, it sounds good.
Source Atle Mo
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Prismatic Groovy Concentric Background 3
Source GDJ
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
A version without colours blended together to give a different look.
Source Firkin
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
A free seamless background with pink spots.
Source V. Hartikainen