CC0 and seamless wellington boot pattern.
Source SliverKnight
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Prismatic Groovy Concentric Background 2
Source GDJ
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo