Strange gadgets

A standard-looking case that changes colour with heat, shown as a neat gimmick without a firm verdict.

A polarising case that some people hate and others love, with Arun unsure who it is for.

A battery-powered case with Nokia 3310 quality games that splits people into those who see the point and those who do not.

Mentioned as a notebook whose front page can be interacted with through the app.

Not really a smart gadget, but an ornament with interesting augmented reality features.

A cleverly designed umbrella whose handle keeps both hands free so you can use your phone.

A hat with built-in wireless drivers that he found embarrassing to show off.

A funky USB-powered lighter that is one of his favourite things in the room.

One of the best presented construction toys he has seen, with a smart hub and good quality pieces.

Ordinary trainers that are better than expected, with materials and comfort matching shoes costing twice as much.

An inexpensive clip-on lamp for power banks that is bright but looks a bit funny and blocks ports.

A unique and versatile reusable notebook with a scanning app, though he does not think it is revolutionary.

A UV-cured liquid plastic welder that works well and makes a waterproof, permanent bond, though it is not cheap.

Impressive packaging and software imitation for the price, but the camera is near unusable and the battery drains in a few hours.

A red, KFC-branded mid-range phone made for the chain's 30th anniversary in China, with a jukebox-style music app and only 5,000 units.

A simple, responsive writing slate that is slimmer than a tablet and has a long-lasting battery.

Loud and cheaply packaged, but it does what it claims and is fun to play with.

Interesting magnetic putty to play with, but it leaves an oily residue on the fingers.

Powerful, nicely finished magnetic balls that suit fidgeters, despite some quality control issues.

A great concept, but the flying part often lands too close to be useful and the controls feel cheap.

Eye-catching indoors and good enough as laces, though less flexible and weak outdoors.

Impressively close to the real iPhone X in looks and build for $80, but the software is a skinned Android and it lacks the real features.

His favourite phone gadget of all time, though the fan speed cannot be controlled and it is a bit noisy.