A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
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
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
A free background pattern with abstract green tiles.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian