It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic Polka Dots Mark II No Background
Source GDJ
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin