Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
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
More in the paper realm, this time with fibers.
Source Jorge Fuentes
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Derived from a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Prismatic Abstract Geometric Background 5
Source GDJ
There are many carbon patterns, but this one is tiny.
Source Designova
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
Source Firkin
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen