Mostly just mucked about with the colours and made one of the paths in the lead frame opaque. The glass remains transparent.
Source Firkin
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
Sometimes you just need the simplest thing.
Source Fabricio
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
A version without colours blended together to give a different look.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Prismatic Hexagonalism Pattern No Background
Source GDJ
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek