50 Smartphone Gadgets you might have NEVER seen.

A neat metal-housed retractable cable with micro USB and USB-C, though only about a metre long.

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

Add some tactility to mobile gaming.

One of his favourite power banks, a 6000mAh cassette-styled unit with a slick cable.

A fan that plugs into the phone and uses less power than you'd expect.

Slightly fiddly but worth it for better-exposed photos in low light.

Hype has faded, but this is one of the cheapest, highest quality ways to try VR.

Cable with built-in light that visualises the flow of electricity while charging.

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

Among his favourite items on the list, acting as NFC tags and as coasters.

A slick elastic macro lens that lets the phone camera go much closer.

The budget Bluetooth speaker he recommends to everyone, tough with good sound for the price.

Waterproof suction-cup shower speaker that is much louder than a phone.

Most portable and flat-lying gamepad he has come across, though the buttons are not great.

Memory drive that plugs into both computer and phone.

Plug-in mic that steps up audio for vlogging or calls.

An absolute lifesaver magnetic cable that charges like a MagSafe adapter.

Probably his favourite phone stand: durable, rubberised and fully adjustable.

Clip lens covering macro, wide, ultra wide and fisheye shots.

His go-to headphones when leaving the house, with good battery, comfort and sound.

Unofficial Lego-like iPhone case with swappable bricks that he is a big fan of.

Sticks to the back of the phone for loose change, notes or a card.

More toy than cinematographer's tool, for 3D photos viewed on Cardboard.

Screen protector with a blue light filter that doesn't distort colours like software ones.

Gives more even, cinematic lighting for selfies.

Very impressive 40x zoom for a phone but not very practical to use.

A cable that withstands heat, tearing, heavy weights and fraying.

Probably the best portable way to enlarge a phone screen, and he likes it.

Inexpensive plastic hook that gives a charging phone somewhere to rest.

A curious speaker where the form factor and customisable display are the selling point.

Not a magic formula but a bottle lasts a very long time.

Wireless pad for three devices with two USB ports.

Keeps cables together on a desk without tangling.

360-degree camera that plugs into the phone, with 4K video and 24MP photos.

One of the coolest things on the list, letting you hear through walls.

Full-size wireless keyboard that is very portable.

Lint-roller-style screen cleaner that is an option but not his favourite.

Tiny speaker with volume and bass beyond expectations for its size.

The splitter he recommends, as it clips to a key chain and avoids dangling cables.

Powerful station with eight fast-charging USB ports and a wireless pad on top.

Easily one of his favourites, a small printer needing no Wi-Fi, cable or batteries.

Nifty two-in-one fidget spinner and ring holder for the back of a phone.

Tiny USB bulb to use with a power bank as a high-efficiency lamp.

Pretty good way to get dirt out of hard-to-reach areas.

A very good way to add three USB ports to an OTG-capable phone.

Stealthy under-desk gadget that hangs headphones and charges up to three devices.

A dock only for those very serious about their phone, adding USB 3.0, HDMI and Ethernet.

Connects to laptop and phone so both displays are visible from the same angle.

Sticky elasticated wallet that contains a 22-in-1 kit.

His new favourite power bank for its 45W output, enough for a Huawei laptop-class phone and MacBook.

One of the most portable and coolest ways to type on the go, though it needs a flat surface.