For my family ID my wife and I decided to go with the Ursa Major constellation.
Constellations - Ursa Major by Csaba Gyulai Popular
Ursa major brooch Bear brooch Wooden brooch bear Big by MagicTwirl
Necklace Ursa Major argent plaqué or par Twinklebird sur Etsy
These gorgeous constellation inspired necklaces can be found at Eclectic Eccentricity.