A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5
Source GDJ
Prismatic Hexagonalist Pattern No Background
Source GDJ
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Prismatic Abstract Background Design No Black
Source GDJ
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
A bit strange this one, but nice at the same time.
Source Diogo Silva
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
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury