Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Background Design
Source GDJ
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
Source Firkin