So, you're interested in helping? This is great!
Here's a little something you'll need to know about helping babies, especially preemies...
MATERIALS... must be soft. The skin is tender, quite different from our more mature skin.
PATTERNS... there are many patterns scattered throughout the internet that can be used. Most of these are yarn-based patterns. This is because the directions are simply written out. Sewn patterns, for most, require a physical pattern and are usually copy-write protected. Since the intended use of these patterns are for charity, they can typically be bought for a minimal price.