Everything I've tested.

A $3 ear hook with open sound that is not immersive, better as a puzzle than an earphone.

He expected to hate them but was oddly won over, and they made him want to dance.

A cheap-feeling toy gun that is very weak and pointless.

Cheap egg lights that make you very noticeable on the road.

It worked, showing a full battery as 100 and his remote battery at about 90.

A $3 speaker that sounds better than expected and beats his phone.

A strange singing instrument he found baffling and a bit inappropriate to play.

Voice-reactive and mind-bending, he called it the coolest gadget ever to enter the building.

A fitness tracker that electrocutes you over bad habits, and the shock was a really hard pinch.

Fast and hard to control, though he managed to ride them after a few scary attempts.

Expensive, but it worked when he fell and could save someone's life.

Nicer to use, with magnets and less flex, but it picked up marks and camera ring damage in the drop test and he was not convinced by it.

A $5 frother that does what he wanted for recreating a Starbucks mocha at home, and it is easy to clean.

Not great sounding, but at $5 it makes sense as a way to boost your phone's volume in the shower.

A tiny, good-value luggage scale that helps him avoid airport overweight fees.

Six-dollar elastic laces that he calls a game changer for running, as they never need tying.

A $10 wall-mounted foaming dispenser that has already become central to his routine and does not feel like a gimmick.

A $2 drainer that keeps soap less squidgy and makes it last longer.

The most versatile cable he has seen, with swappable magnetic ends, a rotating head and 60W support.

A $2 set of flexible straws for a vacuum hose that reaches tight spots without sucking up your belongings.

A sponge on a refillable handle that he calls the most handy product of his university life.

A $2 four-pack of surprisingly strong suction hooks that has become a staple in his shower.

A tiny 4cm cable that looks like a USB stick and lets him top up his phone from any standard USB port.

His number one pick, a sink-mounted glass rinser that cleans glasses very quickly once installed.