Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Prismatic Geometric Pattern Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamlessly tileable pink background texture.
Source V. Hartikainen
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
An alternative colour scheme to the original seamless pattern.
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
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin