Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Abstract Tiled Background Extended 6
Source GDJ
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
f you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
The image depicts a seamless pattern of a snow crystal.I referred to a book called ”sekka-zusetsu” or "雪華図説" which means an illustrated explanation about snow crystals.This book was published in 1832 (天保3年) or Edo period.For more about "雪華図説",see here:dl.ndl.go.jp/info:ndljp/pid/2536975
Source Yamachem
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Subtle scratches on a light gray background.
Source Andrey Ovcharov
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