From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
Looks like an old rug or a computer chip.
Source Patutin Sergey
A nice and simple white rotated tile pattern.
Source Another One
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Embossed lines and squares with subtle highlights.
Source Alex Parker
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
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
White circles connecting on a light gray background.
Source Mark Collins
A comeback for you: the popular Escheresque, now in black.
Source Patten
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen