Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Prismatic Geometric Pattern Background 2
Source GDJ
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
A nice and simple white rotated tile pattern.
Source Another One
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A free seamless background with pink spots.
Source V. Hartikainen