Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Subtle scratches on a light gray background.
Source Andrey Ovcharov
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 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green