I made a buttoned jumpsuit for my 3 year old, I'm not sure how wise that is, with bathroom trips that require a bit of urgency. But I had planned to make one for her when she was younger and never got around to do it yet.
Pattern: did not use any pattern, but based the yoke on Kambur which can be found in the book "knitting with icelandic wool", which I have recommended countless times here on the blog. Yarn: Istex Léttlopi
needles: 3.5 and 4.5mm