To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Colourful background achieved with gradient fills.
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Prismatic Curved Diamond Pattern No Background
Source GDJ
Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
An alternative colour scheme to the original seamless pattern.
Source Firkin
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.
Source Max Rudberg
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Prismatic Groovy Concentric Background 4
Source GDJ