Embossed lines and squares with subtle highlights.
Source Alex Parker
Prismatic Abstract Geometric Background 5
Source GDJ
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
This one needs to be used in small areas; you can see it repeat.
Source Luca
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Subtle scratches on a light gray background.
Source Andrey Ovcharov
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
There are many carbon patterns, but this one is tiny.
Source Designova
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE
Source Sojan Janso