This is sort of fresh, but still feels a bit old school.
Source Martuchox
Sort of reminds me of those old house wallpapers.
Source Tish
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
8 by 8 pixels, and just what the title says.
Source pixilated
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
The image is a seamless pattern which is derived from a vine .Consequently, the vine got like dots via vectorization.The original vine is here:jp.pinterest.com/pin/500744052301410188/
Source Yamachem
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Remixed from a PNG that was uploaded to Pixabay by k_jprather
Source Firkin
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars