Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
f you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A seamless background texture of old cardboard.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Prismatic Groovy Concentric Background 4
Source GDJ
A bit of scratched up grayness. Always good.
Source Dmitry
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Retro Circles Background 4 No Black
Source GDJ
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso