A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
The original enhanced with one of Inkscapes's filters.
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
Used a cherry by doctormo to make this seamless pattern
Source Firkin
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Abstract Ellipses Background Grayscale
Source GDJ
A seamless texture of worn out "cardboard".
Source V. Hartikainen
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Zero CC tileable Laminate wood texture, photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin