Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
A nice and simple white rotated tile pattern.
Source Another One
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 beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem