I made her a wee matchy one for the baby, and she tried it on her belly for size the other night. It seemed to fit. (Made it up as I went along, sorry no notes -- I tried to make it so that it would fit an 8 month old, so he can wear it this next winter.....)
Horseshoe cable for the son of a whoreshoe.
Anchor buttons for the son of a sailor
Same yarn as Joni's, below, pattern mine, made up as I went along....