Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Prismatic Hexagonalist Pattern No Background
Source GDJ
The image depicts polka dot seamless pattern.
Source Yamachem
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
An alternative colour scheme for the original background.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
This is sort of fresh, but still feels a bit old school.
Source Martuchox
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca