You may use it as is, or modify it as you like.
Source V. Hartikainen
This one is amazing, truly original. Go use it!
Source Viahorizon
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen
Just like the black maze, only in light gray. Duh.
Source Peax
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen