A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
A free seamless background with pink spots.
Source V. Hartikainen
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
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
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Original minus the background
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
A bit strange this one, but nice at the same time.
Source Diogo Silva
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8