It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
This is a hot one. Small, sharp and unique.
Source GraphicsWall
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen