One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Background formed from the original with an emboss effect.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Plywood Web Background background image for use in web design.
Source V. Hartikainen
Prismatic Geometric Pattern Background
Source GDJ
Prismatic Hexagonalist Pattern No Background
Source GDJ
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Seamless Prismatic Geometric Pattern With Background
Source GDJ
Prismatic Abstract Background Design No Black
Source GDJ
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin