Staff of Thunder and Lightning

Maria was ten years, seven months, and 26 days (and 18 hours) old when she was gifted her staff. It was a gift from her mother to help her solve the puzzle of the world. It's hard to say whether she knew about its magic - but the staff was there to guide and even save Maria for many years. It was powerful, able to harness the powers of the storm, but Maria rarely relied on its magic; instead, it was a walking staff (and occasionally a bonking staff). 
When the party fought The Grieving monster in WoDaD Session 24, it caught her staff and shattered it. After the battle, Maria grieved and buried the top of the staff. This connection between Shar (goddess of grief) and the staff blessed by the goddesses of the storm brought Astrape and Bronte closer to the material plane and birthed the Avatar of the Storm.