Fastenings: Plain flat half-inch buttons are best to use for fastening. Avoid nylon and metal fastenings, as they get very hot under the incubator heaters. Do not use Velcro as a fastening, it is very scratchy on the hook side and also damages knitted garments when they are laundered. Ease of dressing is vital for preemies and as a general rule it is best not to use ribbon as a fastening as ribbon can often be fussy to tie on a garment so small.
Many specialist knitting bags are also designed to specifically cater to knitters, with inner linings that are tough enough to resist damage from knitting needles or scissors being kept inside. Popular brands of knitting bags include methane, Namaste and Bergere de France, but there is a huge range of stylish and practical designs on the market from many different manufacturers.
Confetti Yarn: This yarn is very lightweight and soft as soft can be. It usually comes in pretty pastel colors, just perfect for knitting for baby. You can use this yarn with another, or on its own. I used confetti yarn when knitting a blanket for my granddaughter Julia. I alternated rows of confetti with rows of another soft pastel baby yarn. The results are wonderful.
The charities involved usually have free knitting patterns and advice on their websites so do not be worried by all the details as you really will be able to find a garment to suit both your knitting skills and the babies needs
The charities have a lot of information on their websites, below is some general advice to help you get those needles clicking.