With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Abstract Tiled Background Extended 12
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight