There are many carbon patterns, but this one is tiny.
Source Designova
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Prismatic Groovy Concentric Background 2
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
White circles connecting on a light gray background.
Source Mark Collins
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso