Best tip: Olympus sensor cleaning

We did pick up a particularly useful tip. There wasn't a sensor swab in sight for the sensor-cleaning part. Instead, the technicians were using a fresh little square of rice paper picked up with the tweezers, wrapped around the end and dabbed with a spot of special sensor-cleaning fluid. Interesting...
Best gadget: My iStick

You start by plugging the iStick into your iOS device and this automatically initiates the app download. You can then use the app to choose the files you want to copy across to the iStick. It comes in different capacities, from 8Gb (£50) to 128Gb (£200) and while the makers acknowledge there are similar devices out there already, this is not only the cheapest, it's the first to be made from aluminium. You can find out more at the My iStick website.
Weirdest gadget: 360-degree Pano Pro Go Pro

It's rather clever. The camera is mounted facing upwards into a specially-shaped circular mirror. It produces a full 360-degree circular image that can then be edited by the software into a regular horizontal panoramic image. The key point with the Go Pro version is that you can shoot from a single viewpoint, and then rotate the view afterwards to change the viewpoint through a full 360 degrees.
The regular version is much larger, using a specially made tubular mount with the camera at the base and the mirror at the top. There will be some quality loss that stems from extracting rectangular segments from the circular image, but this is balanced by the sheer convenience of being able to capture a full 360-degree image with a single exposure and no panning or stitching.
Simplest solution: Vixen Polarie Star Tracker

It's disarmingly simple. You fit the Polarie to your tripod head, adjusting the angle so that it's pointing at the pole star (Polaris) – you can get an spotting scope for this. This sets the Star Tracker at the right angle to follow the arcing movement of the stars across the sky.
You then attach your camera to the Star Tracker via a second tripod head, start the motor and start your time exposure. It looks brilliantly simple, and was on sale at the show for £319, including the Polar Scope. But what if (we hear you ask) you're in the southern hemisphere, where you can't see the pole star? Simple – there's a switch on the base for 'S' (southern) and 'N' (northern) hemispheres.