There are many carbon patterns, but this one is tiny.
Source Designova
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Prismatic Geometric Pattern Background
Source GDJ
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin