A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
The original enhanced with one of Inkscapes's filters.
Source Firkin
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A seamlessly tile-able grunge background image.
Source V. Hartikainen
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Background formed from the original with an emboss effect
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Derived from a JPG that was uploaded to Pixabay by ractapopulous
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Formed by distorting a JPG from PublicDomainPictures
Source Firkin