To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
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
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Number five from the same submitter, makes my job easy.
Source Dima Shiper
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin