Huggies have collaborated with ad agency Ogivly Brasil to develop TweetPee, a nappy attachment that accurately keeps track of moisture levels to alert you when a change is due. 

The sensor is a cute bird which sends out tweets which can be tracked by your mobile so you never run out of nappies. It’s only just come onto the market, and not for sale in the UK yet, but I for one will be ineterested to review this!