From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
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 seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
A chequerboard pattern with a fruit theme. The fruits are from a posting by inkscapeforum.it.
Source Firkin
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
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
You know you love wood patterns, so here’s one more.
Source Richard Tabor
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ