Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
This one is amazing, truly original. Go use it!
Source Viahorizon
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Prismatic Geometric Pattern Background No Black
Source GDJ
A black tile-able background with paper-like texture.
Source V. Hartikainen
Prismatic Rounded Squares Grid 3 No Background
Source GDJ