Looks like an old wall. I guess that’s it then?
Source Viahorizon
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Prismatic Polyskelion Pattern No Background
Source GDJ
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Prismatic Groovy Concentric Background No Black
Source GDJ
A seamlessly tileable pink background texture.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
The base gradient edited so now more details are rendered.
Source Lazur URH
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
A floral background formed from numerous clones of flower 117.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen