German artist Nik Nowak is prepared for the worst DJing assignments. His tank is an enormous sound system mounted on the chassis of a tracked dumper. When he's in position, he can lift the body of the tank forward to make his speakers face the audience. All the controls that he needs to drive or manipulate sound are in the cockpit. So who has a request?

Link -via DVICE

Canada's Royal Mint has introduced a line of quarter dollar coins with native cryptids on them. One one side, you can find Queen Elizabeth II. On the other, you'll see variously Memphré, which is a reptilian monster that inhabits a lake in Quebec, Mishepishu, which is a water panther of Lake Superior, or the more internationally famous Sasquatch.

Link -via Geekosystem

(Video Link)

Dominic Wilcox is a very imaginative artist whose work we've featured extensively at Neatorama. His latest project is a real treat: moving human figures inside watches. The results are often quite amusing. My favorites are "Oblivious iPhone User" and "The Unrequited Handshake."

Link -via Born Rich

I like this simple but cute wedding invitation design by Cristina Moralejo. As you open it, you tie the proverbial knot.

Link -via Fubiz

(Video Link)

Well, over time, the Joker did change his appearance. I mean, Cesar Romero and Heath Ledger didn't look alike at all. So some confusion is inevitable for a busy vigilante.

I'm not sure how Thomas Doyle envisions the end of the world, but his dioramas depict clear separations between that which is destroyed and that which remains intact. His whole series called "Distillation" is hauntingly engaging.

Link -via Colossal

Rafael Rozenkranz designed a washable jogging suit that has a MP3 player built into it. A kinetic generator powers the player, which is controlled with large buttons on the chest. Best of all, the skintight suit will look so very attractive on you.

Link -via DVICE | Project Website

You can find this amusing sculpture by Miquel Barceló in Union Square in New York City. It stands 26 feet tall and weighs 7 tons. Why an elephant, let alone one in this position? The artist explained, "A tree looks like an upside-down elephant, and when you touch a tree, it feels like the skin of an elephant."

Link -via My Modern Met | Photo: Marlborough Gallery

Previously by Miquel Barceló: The UN's New Grotto

Chicago-based artist Mary Ellen Croteau made this self-portrait out of translucent plastic bottle caps. When carefully stacked in different combinations, they produce a wide array of colors. This entire mosaic is eight by seven feet across.

Link -via Dude Craft

From 1836 to 1940, the Bellville family of London operated a business of letting people know the time. Ruth Bellville, the most famous member of that family, walked around London with a high grade watch that had been set to within one tenth of a second of the Royal Observatory in Greenwich. For a fee, she'd tell you the current time:

Clients checked their timepieces against the Belvilles' silver "chronometer", which was called Arnold after its maker, and paid for the privilege.

Such was the reliability of Ruth Belville and Arnold as distributors of GMT that competition from the electric signals of the Standard Time Company could not put them out of business, despite a "dirty tricks" campaign, through lecture halls and newspapers, to undermine Ruth's old-fashioned practice.

Belville continued to ply her trade up to the age of 86, including making the twelve-mile journey on foot to Greenwich.

Link -via Nerdcore | Photo: Futility Closet

(Video Link)

Brad Slattery made Super Pixel Bros., a version of Super Mario Bros. that is played with 64 alternating lights. The whole design is quite minimal. There's a 8X8 LED matrix, a digital display, and controller buttons mounted onto a circuit board. There are multiple levels in the game, each of which is 120 pixels wide. Mario is represented by a simple yellow dot.

http://www.bradsprojects.com/electronics/Bradsprojects-SuperPixelBros.html -via Bit Rebels

The Migrations Map is an interactive map that lets you see which countries people are moving to and from across the world. Here, for example, are the ten largest streams of immigrants into Australia. The UK contributes the largest share with over one million current residents of Australia.

This map was made by Martin De Wulf, a computer scientist in Brussels.

Link -via MetaFilter

In a way, this actually makes it simpler. But I'll probably end up using tax preparation software anyway.

-via Glenn Reynolds | Image: Daniel J. Velleman

I can't find any information about this marvelous invention other than that it was spotted at the University of California at Davis. It does not appear to be a commercially-available product, but a one-off structure. I know one thing with certainty: I want one.

Link -via reddit

(Video Link)

The Jedi Kittens are back! This time, there's a frantic chase through a trench on the surface of the Death Star (or something approximate) followed by a lightsaber duel.

-via Nerd Bastards