I've sewn with both my godchildren, ages 4 and 6, and my nieces , age 3 and 5, sitting on my lap. They put their hands on top of mine so it feels like they are doing the sewing. I let them operate the presser foot, take out pins as we sew along, cut threads, and if they are lucky step on the foot peddle to wind the bobbin. I always give them a safety talk first and give frequent reminders as we go along. I've not had a bit of trouble with any of them. We've done some simple, quick projects together and they have really gotten a kick out of it. They are so proud of what "they" made
My god-daughter likes it so much she can't wait for me to get the hand crank machine I bought for her to sew on cleaned up. I guess I know what to get her for Christmas this year!