I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen