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
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Prismatic Groovy Concentric Background 3
Source GDJ
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Element of beach pattern with background.
Source Rones
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Utilising a bird from s-light and some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin