Other

A bottle that turns into a bar of soap once the liquid is used; he thinks it looks gorgeous and rates it three out of ten.

Cheap and effective fix for frayed cables that seals, insulates and waterproofs.

Tesla's newly announced humanoid robot, meant to take over dangerous or boring tasks.

Turns food waste into cooking gas, impressive for sustainability, rated 5 out of 10.

Space-saving adjustable dumbbell with nine weights from 2kg to 30kg, rated 3 out of 10.

Spray that makes clothes, shoes and carpets super hydrophobic.

Hidden underground bins that keep streets clean and need emptying weekly, rated 5 out of 10.

BlackBerry demanded an IMEI and then a paid support fee, so he got no answer and no stars.

Apple's support had a long wait and needed account details, though staff were friendly once he got through, so 2.5 stars.

Huawei's support was fast and to the point, and he scored it 4.5 out of 5.

Vivo would not handle technical problems over the phone and could only promise an email, so he gave one star.

OPPO's agent overcomplicated a simple problem but stuck with him to a solution, earning 3.5 stars.

Xiaomi's agent was friendly and solved the problem quickly, earning 4.5 out of 5.

Samsung's support sent him round in a loop and hung up on him, but a second agent got to the answer, so he gave three stars overall.

Rechargeable arc lighter that avoids fuel and flame, scored 8 out of 10.

Metal alloy pencil notebook that never runs out and works anywhere, scored 8 out of 10.

Floating bin that captures plastic from the sea, docked a point because it needs electricity, 7 out of 10.

Uses a vacuum cleaner to mould copies of objects in almost any material, scored 8 out of 10.

The blood testing machine did not work as claimed, risking misdiagnosis, and earned his top 10 out of 10 fail.

Presented as a likely next step in human-technology merging, with huge potential benefits and serious risks.

Flexible, light and comfortable sunglasses at a modest price, though the frames are slightly large.

Two-sided tool that seals damaged cables with a compound cured by UV light.

Smart stickers let you track what is in storage boxes by photo and scan.

Custom wooden sign of his logo that he has not yet mounted.