A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
A free seamless background with pink spots.
Source V. Hartikainen
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Original seamless pattern with an Inkscape filter.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Abstract Ellipses Background Grayscale
Source GDJ
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
A blue background wallpaper for websites. It has a seamless texture with vertical stripes. It looks quite nice not only when using as a tiled background on websites, but also on computer desktops.
Source V. Hartikainen
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim