It was difficult to knit without my eldest daughter's knowledge. I had to do a lot of very late night and early morning knitting. I'd intended to knit during my lunch hour as well, but I had so many last minute lunch meetings that made that goal impossible. However, I did it, she was surprised and she loved it.
Gift knitting is very stressful, I don't know how you all do it. Although, I'm contemplating doing some baby gift knitting for a co-worker.