Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim