Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen