The Replicator ships with a small plastic square its makers use to test the printer in order to make sure that everything is running well.

ENGADGET: MakerBot Replicator impressions: the dawning of 3D printers in every home?

Data was stored on rewritable magneto-optical disks 2.5in (64mm) in diameter housed for protection in a square plastic shell.

BBC: Sony to make last MiniDisc stereo system in March

And could it be trout farming below the dam at Dolores square plastic-lined pools in which writhing motion could be detected, as if someone were boiling a great stew of fish rather than breeding them?

NEWYORKER: Or Else

For an Intel Pentium II, the package is a square of plastic 1.2 inches on a side and as thick as a silver dollar.

FORBES: It's all in the packaging

For an Intel Pentium II, the package is a square of plastic about 30mm on a side and about as thick as a gold Krugerrand.

FORBES: It's all in the packaging

In June 2006 a United Nations Environmental Program report estimated that there is an average of 46, 000 pieces of plastic debris in every square mile of ocean.

CNN: Fighting the tide of plastic bags in a world awash with waste

Eventually, he found his target: a square sliver of black plastic called a baseband processor, the chip that limited the carriers with which it could work.

NEWYORKER: Machine Politics

The culprit broke off the illuminated plastic globe from the statue in Bournemouth Square.

BBC: CCTV catches Bournemouth Light of Hope thief

In the case of ours, the square was red and green -- the plastic in our own spools, meanwhile, was white and black.

ENGADGET: MakerBot Replicator impressions: the dawning of 3D printers in every home?

Indeed, Square could potentially help Visa and other card companies by bringing plastic transactions to markets that have historically been underserved.

FORBES: Visa And Square: Why Goliath Is Investing In David