CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Background formed from the original with an emboss effect.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
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
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek