In Brazil it is common to get a child’s baby tooth and make a pendant in gold or silver. Like this one: https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSdI4-aOYxAtprGvprjBVy95RTjOK5aVDTzQQ&usqp=CAU
I’ve neve thought of it as creepy. It always seemed kinda sweet to me. Maybe because every kid had one.