Subtle scratches on a light gray background.
Source Andrey Ovcharov
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
Prismatic Groovy Concentric Background No Black
Source GDJ
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
A seamlessly tileable pink background texture.
Source V. Hartikainen
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin