Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
An alternative colour scheme to the original seamless pattern.
Source Firkin
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
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
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
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
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim