Over the Christmas break I had time to meet with an old friend for a cup of tea, and she gave me some of the best advice I’ve ever had. I’d always wanted Sugru to be big – available in the shops for anyone to buy, like duct tape or post-it notes. I’d let this ambition for scale and ubiquity get in my way. Her advice was to “start small and make it good”.

I promptly made this my new year’s resolution.