Looks like an old rug or a computer chip.
Source Patutin Sergey
Prismatic Hexagonalism Pattern No Background
Source GDJ
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
A bit strange this one, but nice at the same time.
Source Diogo Silva
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Plywood Web Background background image for use in web design.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo