Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Colourful background achieved with gradient fills.
Source Firkin
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Seamless Green Tile Background
Source V. Hartikainen
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Sharp but soft triangles in light shades of gray.
Source Pixeden
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
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
Prismatic Basic Pattern 2 No Background
Source GDJ
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Sometimes you just need the simplest thing.
Source Fabricio
White circles connecting on a light gray background.
Source Mark Collins
Not so subtle. These tileable wood patterns are very useful.
Source Elemis