A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
The image depicts the Japanese Edo pattern called "seigaiha" or "青海波" meaning "blue -sea- wave".I hope it's suitable for the summer season.
Source Yamachem
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
The image is a seamless pattern of a fishnet.
Source Yamachem
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
Prismatic Abstract Geometric Background 2
Source GDJ
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic