Continuing the geometric trend, here is one more.
Source Mike Warner
Light and tiny, just the way you like it.
Source Rohit Arun Rao
This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
More in the paper realm, this time with fibers.
Source Jorge Fuentes
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
Prismatic Geometric Pattern Background
Source GDJ
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin