From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
White circles connecting on a light gray background.
Source Mark Collins
Prismatic Groovy Concentric Background 2
Source GDJ
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
A version without colours blended together to give a different look.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
This is a remix of "geometrical pattern 01".
Source Yamachem
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
A seamless web texture of "green stone".
Source V. Hartikainen
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin