This one needs to be used in small areas; you can see it repeat.
Source Luca
The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Gold Triangular Seamless Pattern No Background
Source GDJ
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
A pale olive green background with a seamless texture.
Source V. Hartikainen
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso