Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
A frame using leaves from an image that was uploaded to Pixabay by mayapujiati
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A light brushed aluminum pattern for your pleasure.
Source Tim Ward