The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
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 ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
Black And White Floral Pattern Background from PDP.
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Retro Circles Background 8 No Black
Source GDJ
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Prismatic Hexagonalist Pattern No Background
Source GDJ