Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
The original enhanced with one of Inkscapes's filters.
Source Firkin
From a drawing in 'Friend or Fortune? The story of a strange year', Robert Overton, 1897.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Retro Circles Background 8 No Black
Source GDJ
There are many carbon patterns, but this one is tiny.
Source Designova
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper