Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
Light and tiny, just the way you like it.
Source Rohit Arun Rao
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
There are many carbon patterns, but this one is tiny.
Source Designova
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
To get the tile this is based on, 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
A new one called white wall, not by me this time.
Source Yuji Honzawa
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick