What tops your sci-fi gadget wish list? For me it's Douglas Adams's laser knife that toasts bread as it cuts. I hadn't thought about it for ages, until I read about a new surgical knife that 'sniffs' out cancer cells as it slices.
Like the bread knife, the iKnife slices using heat. Then it analyses smoke from the burning tissue and alerts the surgeon to any bits of tumour left behind.
Trials using this life-saving tool are under way in London. What a brilliant way to give surgeons extrasensory perception!