Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
A seamless texture of black leather. I think it will look best when used in headers, footers or sidebars.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo