A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Geometric Pattern Background
Source GDJ
Prismatic Groovy Concentric Background 5
Source GDJ
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
There are many carbon patterns, but this one is tiny.
Source Designova