A pale olive green background with a seamless texture.
Source V. Hartikainen
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
This one is amazing, truly original. Go use it!
Source Viahorizon
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
An alternative colour scheme for the original background.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
CC0 and seamless wellington boot pattern.
Source SliverKnight
A repeating background with wood/straw like texture.
Source V. Hartikainen
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
A seamless paper background texture colored in pale yellow. This seamless texture is ideal for those who need a yellow background image for their website. The texture resembles paper.
Source V. Hartikainen