I purchased a custom key three years ago with Psalms 138:8 engraved on it. "The Lord will perfect that which concerns you. Your mercy and loving kindness endure for ever. Do not forsake the works of Your hand." It helped me get through a transition in my relationship, to trust and know God was there for me. Truthfully I never thought that I would be able to give up my Giving Key.
But a woman I work with has two daughters that are volunteering in a orphanage in Africa close to where Isis killed the Christians. She has the faith that God will surround her children with angels and protect them. I know this key will give her a physical reminder of that.