The five most bizarre products at CES

A smartwatch for keeping track of tennis scores

I'm a pretty keen tennis player, and one who often forgets the score of the game I'm playing in, but even I was taken aback by this product: a watch that keeps track of your scores. You win a point: press the top button on the right-hand side of the watch. Your opponent wins one: press the bottom button. You can even have two people playing and synchronise scores.

The question is, why? The thoroughly nice chap I spoke to on the stand suggested you could follow your children's matches from afar, as the score is synchronised via the cloud, and that it would help you improve your performance because you'd have full records of your games. It's a quirky idea, but difficult to see how many sales it would, um, net.

A 3D-food-printer-combo-oven

“Imagine,” the compelling lady told me, “being able to not only bake biscuits with your children but design them too.” She smiled. I smiled. Then I edged away.

Not that 3D food printers are a new idea – we saw one at CES last year – and it has to be said that the cookies they had on show were quite tasty. And a lovely, swirly shape. Plus you can use chocolate to create cool shapes of your own devising, which I can see the appeal of for kids' parties and the like.

But this has novelty item writ large all over it, and I'm made even more nervous that, when I asked what the price was, she smiled again. “Ask me in a couple of days.”