Climpek@2X #776
Grid CC BY-SA 3.0Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
More Textures
Diamond pattern #2285
Brown CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background No Black@2X #452
Noise CC 0Prismatic Groovy Concentric Background No Black
Source GDJ
Background pattern 3 #222
Noise CC 0A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Colorful Floral Background 3 No Black@2X #486
Light CC 0Colorful Floral Background 3 No Black
Source GDJ
Decorative divider 253 #2064
Dark CC 0From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Batthern@2X #325
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Interlocking pattern 3 (colour 2) #2405
Grid CC 0A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Fabric pattern 3 (colour 5) #2383
Fabric CC 0Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Polka Dots Mark II 3 No Background #534
Noise CC 0Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Background pattern 245 (colour 2) #2191
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Background pattern 234 (colour 2) #2258
Green CC 0Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Leafy pattern 8 #1806
Dark CC 0Inspired by a JPG that was uploaded to Pixabay by kokon_art
Source Firkin
Decorative divider 299 #1743
Dark CC 0From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
White Paperboard #374
Fabric CC BY-SA 3.0Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Grunge Website Background #1122
Grunge CC BY-SA 3.0A seamlessly tile-able grunge background image.
Source V. Hartikainen
Background pattern 199 #2508
Green CC 0Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Configurable Graph Paper #141
Stripes CC BY-SA 3.0Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
Wood Pattern #370
Wood CC BY-SA 3.0One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Background pattern 289 (colour 2) #1936
Red CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin