A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
It looks very nice I think.
Source V. Hartikainen
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Light and tiny, just the way you like it.
Source Rohit Arun Rao
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
Prismatic Geometric Pattern Background 2
Source GDJ
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-yellow.
Source Yamachem
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom