In the apt senior complex I live in, there is a knitting group that makes hats for babies for the local hospital, but they only use the soft baby yarn. I had a friend who use to make those burp pads from two pieces of flannel. After turning them inside out, she would do a fancy stitching on her DSM that really made the pad's edge prettier. Do you have any contact with the lady you gave the hats to?? she probably could tell you if there are any restrictions on what is allowed in the ward. Good Luck.