To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
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
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Feel free to use this seamless background texture as a background on a web site. It's colored in a light pink color and is seamlessly tile-able.
Source V. Hartikainen
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen