The Magnetix iCoaster is the first DIY magnetic roller coaster complete with drops, jumps, loops, and, fully customisable DJ mixes.

The idea is to build your coaster using the various sections of track, stunt pieces and towers for your coaster cars (metallic balls) to be propelled along.

So far, so let's-make-physics-fun, but the "i" prefix comes into play with the built-in speakers that not only offer 100 musical combos to accompany your action, but has an input for an audio source so you can play your pod's tunes through the system.

Quite random, but apparently very compelling, the iCoaster is £80 from Firebox now. - learn about it / talk about it / deal with it At parents can find all the advice they will need to keep their children safe online. Designed specifically for parents, the site offers a wealth of up-to-date, unbiased information and advice about how to deal with online safety. Parents can learn about the latest issues and technologies, get great tips on how to talk about online safety with their children and get the best advice on dealing with issues and taking action. Created with experts, Internet Matters provides detailed information, but also signposts to best-in-class resources from individual expert organisations. Our goal is to ensure parents can always access the information that they need, in a format that is clear and concise.