I second the Ribbed Baby Jacket, which is a Debbie Bliss Design, recommended by jeanius80.
Another great little pattern is this sweater, which I finished knitting last night -
I thought the busy-ness of the stitch in the bottom half of the jumper was unnecessary - the colourful stripes are the feature of this jumper - so I knitted the bottom half in plain stocking (stockinette) stitch, with a few rows of garter stitch round the bottom to prevent curling. There are so many colour combinations you can use, put on some special buttons, and it looks very cute.
The hat instructions don't seem to quite match how the hat looks in the picture. I did a hat to a different pattern but still using the same stripes, just didn't bother trying out that hat when I already knew my favourite one is reliable.