This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin