Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Prismatic Geometric Pattern Background No Black
Source GDJ
A seamless web texture of "green stone".
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
The image depicts the Japanese Edo pattern called "seigaiha" or "青海波" meaning "blue -sea- wave".I hope it's suitable for the summer season.
Source Yamachem
Prismatic Groovy Concentric Background 5
Source GDJ
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless texture of a rough concrete surface.
Source V. Hartikainen
Prismatic Basic Pattern 2 No Background
Source GDJ
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Sort of reminds me of those old house wallpapers.
Source Tish
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić