This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
This is a hot one. Small, sharp and unique.
Source GraphicsWall
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
Alternative colour scheme to the original.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki