One of my good friends Rachel is a fellow crafter! And by crafter I mean she makes her own line of jewellry (http://www.innocentvintage.etsy.com/), and a few baby items to boot! I love this onesie she made for my baby girl. Faux necklaces galore! I believe she uses a fabric marker from just a local craft store, and draws her own unique designs. You could try this at home too! The marker stays put even wash after wash! This would make a very cute baby gift!