This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Original seamless pattern with an Inkscape filter.
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
It looks very nice I think.
Source V. Hartikainen
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin