Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Zero CC bark from fur tree tileable texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Embossed lines and squares with subtle highlights.
Source Alex Parker
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin