Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Original seamless pattern with an Inkscape filter.
Source Firkin
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
A comeback for you: the popular Escheresque, now in black.
Source Patten
Prismatic Geometric Pattern Background 2
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Abstract Tiled Background Extended 11
Source GDJ
Alternative colour scheme to the original.
Source Firkin
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Gold Triangular Seamless Pattern No Background
Source GDJ
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ