A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
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
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Abstract Tiled Background Extended 12
Source GDJ
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Prismatic Triangular Background Design Mark II 5
Source GDJ
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
The name is totally random, but hey, it sounds good.
Source Atle Mo
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Classic vertical lines, in all its subtlety.
Source Cody L