Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
Sometimes you just need the simplest thing.
Source Fabricio
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
A repeating background with wood/straw like texture.
Source V. Hartikainen
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Prismatic Hexagonalism Pattern No Background
Source GDJ
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran