Bicycle exhaust? Surely there’s no such a thing? Think again! The Turbospoke can turn any eco-friendly bicycle into a petrol guzzling crotch rocket - or at least can make it sound like one.

Turbospoke aims to give a bicycle the look and sound of having an exhaust engine. The toy has two parts: a lightweight plastic mock exhaust, complete with 15 stickers for customisation, and Motocards, plastic cards that create a motor-like sound when hit by wheel spokes.