Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Prismatic Groovy Concentric Background 2
Source GDJ
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
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
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward