Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Prismatic Polka Dots Mark II No Background
Source GDJ
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Green Web Background, Seamless tile.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin