The image is a design of blue glass.How about using it as background image?
Source Yamachem
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
This seamless web background texture looks like gray stone. It's great for using as a background image on web pages, or on some of their elements. Anyway, I hope you will find use for it.
Source V. Hartikainen
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Number five from the same submitter, makes my job easy.
Source Dima Shiper
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo