This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
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
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
A bit strange this one, but nice at the same time.
Source Diogo Silva
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
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
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
A textured blue background pattern with vertical stripes.
Source V. Hartikainen