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
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Background formed from the original with an emboss effect
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Original minus the background
Source Firkin
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
Background formed from the original with an emboss effect.
Source Firkin
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss