The charities have a lot of information on their websites, below is some general advice to help you get those needles clicking.
Cowls: Now, here is a project that is hotter than hot. Cowls, aka mobius knitting is all the rage right now. And no wonder. These little beauties are attached at their ends when finished and they are also called Infinity scarves. Besides looking just terrific with any wardrobe, cowls are the best warmer-uppers on cold winter days. Easy to knit, they can be finished in a weekend.
The blocking mat is another accessory that can be extremely helpful for the knitter or crocheter, or even for those who enjoy sewing and quilting. This mat serves for pinning the project to its surface, making it very easy to line up the project, keeping straight edges, hems and seams.
Another very practical item to invest is a chart keeper, which is tool that can be used to keep and display patterns and charts, all whilst working on a particular project. The chart keeper can be opened out and stood up to place patterns in for easy reference when working on a project, and then folded up and stored away when not in use.
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.