Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Similar to original, but without gaps in between the arrows. This seamless pattern was created from a rectangular tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
Source V. Hartikainen
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin