As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
This one needs to be used in small areas; you can see it repeat.
Source Luca
Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Seamless Olive Green Web Background Image
Source V. Hartikainen
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
Prismatic Polyskelion Pattern No Background
Source GDJ