A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Green Web Background, Seamless tile.
Source V. Hartikainen
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon