A hand made cap and scarf for a baby is a lovely gift regardless if it were something the giver had themselves been given. Blue for a girl is a lovely choice - pink for a boy, not so much. I wouldn't worry about whether it was a regift. Someone took the time and was thoughtful enough to send you a nice present. Now if the present had been something that was obvious you couldn't use or was exceptionally tacky, it would be a different scenerio.