Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Spice up your next school project with this icon background.
Source Swetha
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Seamless Olive Green Web Background Image
Source V. Hartikainen
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen