I love Platinum. Not just the metal, but your 'handle'. I always want to say 'hey Plat', but don't want to seem disrespectful!!
Have you ever checked out this site?
Baby Names
Its a fun one to use to look up names. I used it for Fiona's name by looking up names that mean 'white'. Meanwhile, we usually call her Fifi.
There are other similar sites out there, too, if you google "baby names".