Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Inspired by a pattern I saw in a 19th century book. This seamless pattern was created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski