A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
This one is amazing, truly original. Go use it!
Source Viahorizon
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Black brick wall pattern. Brick your site up!
Source Alex Parker
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin