A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A floral background formed from numerous clones of flower 117.
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin