Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin