A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Number five from the same submitter, makes my job easy.
Source Dima Shiper
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
Prismatic Curved Diamond Pattern No Background
Source GDJ
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ