Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
This is sort of fresh, but still feels a bit old school.
Source Martuchox
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Abstract Tiled Background Extended 11
Source GDJ
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
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
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i
Source Firkin
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin