A seamless background texture of old cardboard.
Source V. Hartikainen
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Lovely pattern with splattered vintage speckles.
Source David Pomfret
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Prismatic Geometric Pattern Background 2
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Sort of reminds me of those old house wallpapers.
Source Tish
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH