Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Plywood Web Background background image for use in web design.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Abstract Tiled Background Extended 11
Source GDJ
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
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