Sometimes you just need the simplest thing.
Source Fabricio
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin