Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
A seamless background of warped stripes on paper.
Source V. Hartikainen
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Prismatic Groovy Concentric Background 4
Source GDJ
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Retro Circles Background 5 No Black
Source GDJ