you built what?

After hearing about preparations for the 40th anniversary of the moon landing at Kennedy Space Center last year, British engineer Iain Sharp decided to develop a tribute of his own. His offering, a remake of the 1979 Atari game Lunar Lander, in which players try to settle a module onto the moon’s surface, is a complex mix of scrapped PCs, fishing line, inkjet printer motors and miniature space vehicles.

A veteran of the TV show Battlebots, Jamie Price has built plenty of destructive machines. But late last year, he designed a robot with a more mellow calling: offering cold beer and cocktails. The result — a masterpiece of plywood, plastic, aluminum and electric motors called Bar2D2 — serves up everything but the sage advice.

When Keith Baxter asked a salesman at a Milwaukee sporting-goods store for something stronger than 60-pound line, he wasn’t dreaming of big fish. He was hoping to catch a face-melting solo—he needed the line for his PC-controlled, motorized guitar.

In summer 2007, Alexander Miller and Jan Lehmann, aerospace-engineering students at Stuttgart University in Germany, took on an unusual task: building a wind-powered vehicle that could race directly into the wind. A year later, their team unveiled its creation, the Ventomobile, which handily defeated the field at North Holland's Racing Aeolus, the first-ever track race between vehicles powered solely by wind.

When Kai Grundt announced his decision to build the ultimate snowblower from a discarded V8 engine, a friend of his just laughed. So a year later, instead of showing his buddy the finished product, Grundt showed him what it could do. He buried the man's truck under a seven-foot-tall pyramid of snow. From two houses away.

Every Friday night, about 10 regulars gather at my place in Perth, Australia, to play Texas Hold 'Em. I'm the co-founder of a technology-services company, L7 Solutions. I'm also a chronic tinkerer and a poker lover.Last fall I decided to up the ante, so to speak, and started planning a table that could generate a video display showing what cards each player has, how much they bet, and their chances of winning the hand. It makes our humble games look just like the tournaments you see on TV.