Steve Caplin is intrigued by a ring for your index finger which will capture audio to take notes or set up timers or reminders. Dutch students have invented a modular electric car which has parts you can swap out yourself, including the battery, motors and even body panels. Wacky inventor Colin Furze has come up with a bicycle that has magnetic suspension. There’s a personal AI chef, an AI monitor for your cat’s litter tray, a way of harvesting lithium from dead rechargeable batteries, an expensive portable sauna you can take camping with you and, in Hangzhou in China, they have wheeled out a robot traffic policeman.

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Steve Caplin says it's been a bad week for Elon Musk. X has been fined €120m for breaching EU digital laws, his Optimus robot demo was disastrous and X's new location facility may help Iranian authorities identify dissenters. He discusses the researchers hoping to make robot hands from lobster shells, the glasses that change focus automatically, a crowd-funding project redesigning a loose-leaf teapot, a printer for children's drawing ideas, an LED light from Ikea and a biodegradable coffin made of mushrooms. He also strongly recommends https://everythingiknow.online, his own new website.

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Steve Caplin plays Santa with Simon his little helper as he unveils his 2025 gadgets Christmas gift guide. Many inexpensive stocking fillers come from AliExpress, like Apple Watch chargers, car phone holders, rechargeable fans and micro wire cutters while, from Amazon, you can get contact cleaner and USB extension cables. Steve even explains where to get winter strawberries. More substantial are portable monitors, bike helmets and iPad cases with keyboards. For the well-heeled, what about a Japanese "human washing machine", a box to display your Rolexes, a hypercar or a James Bond DB5 replica?

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Steve Caplin says the new location feature in X shows that thousands of pro-Trump accounts aren't US-based. The Grok chatbot has been bigging up Elon Musk. Avoid cheap Fire Sticks that offer free streaming services: they can steal your bank details and identity. Voyager 1 is now a light day from Earth. Plans are afoot to launch things into space with a 6-mile-long space gun. The 200-year-old Stirling engine might finally have a use – in the desert. There's progress in getting drinking water from the air. And it seems that the best soldiers for modern warfare are those who have spent many hours playing video games.

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Steve Caplin discusses the way the University of Vienna got details of 3.5 billion people from Whatsapp in the largest data leak in history. He was mystified by the in-built questions for Laura, Skoda's in-car AI. More worrying is the misleading financial advice AI has been giving about ISAs and travel insurance. Among gadgets Steve does not recommend are a tiny Kodak camera for a keychain, a Swiss Army knife for baristas and an acoustic camera that detects the source of a sound. And, disconcertingly, he reports that one in five teens apparently find it easier to talk to chatbots than they do to people.

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Steve Caplin reports that Australian researchers have found that coffee sharply reduces heart problems. Nottingham scientists have produced a gel that can strengthen and rebuild tooth enamel. There's a voice-controlled electric blanket that kills dust mites – only on sale in China. Many UK buses made in China have a kill switch which can be operated remotely. There's advice on how to avoid scams on Black Friday, a new AI e-ink paper reader, an outdoor electric trolley, an expensive "sock" to carry your iphone and an explanation of how Anguilla is getting even richer from having the right domain name.

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Steve Caplin is surprised that, despite AWS's massive internet failure, OpenAI will pay it $38bn for computing power. Robot dogs are to be used to deal with Sellafield's nuclear waste. A humanoid housekeeper apparently has to have a human operator. An Australian company has devised a way of skiing indoors in something resembling a giant hamster wheel. Tesla's Cybertrucks are losing their headlights, because mechanics used the wrong glue. China has built the world's first wind-powered underwater data centre. And a solar powered backpack has been devised for homeless people in California.

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Steve Caplin says that the massive Amazon outage was caused by nothing more than an empty data record. Google has been providing misleading information on pensions and driving licences. There's a clever AI military helmet. Customers of Starling Bank have a new way of avoiding scams. A device attached to your lavatory can monitor your gut health. A German company is offering to 3D-print personalised bike saddles, if you can translate its website. Scientists have found that the most expensive TV screens are pointless. And battery-grade lithium is now being mined in Cornwall.

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Steve Caplin explains about the Amazon AWS outage, the biggest in the history of the internet. He also points out how many Amazon book titles, even best-sellers, are fake and written by AI. He warns against OpenAI's internet browser. He wonders how wise it is using dead animals' DNA to help endangered species. Police in Islington soon intend sending drones to incidents. There's a concept "robot phone" which seems a bit weird. Japanese scientists think they can brew sake in space, for a steep price. And there's a crowdfunded guitar pedal that may please rock musicians.

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Steve Caplin says that Figure AI's mass-produced Figure 03 is the Model-T of humanoid robots. He reveals the truth about the greenness of plug-in hybrid cars. Ferrari have brought out their first electric car – but what noise does it make? Honda are making an "adventure scooter", but so far only in China. Anker are crowdfunding an outdoor projector with inflatable screen. Temu has made £90m profit in the EU, with only 8 employees. And Skyeports believe they can make giant glass spheres on the Moon, but their test is only the size of a cricket ball.

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