A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
8 by 8 pixels, and just what the title says.
Source pixilated
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo