Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
A black tile-able background with paper-like texture.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
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
Colorful Floral Background No Black
Source GDJ
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso