As Amy and Rory looked at their daughter in her cot, Amy pulled something from her pocket to dab Melody’s chin and realised it was the prayer leaf; she told the baby, "You keep hold of this now. It will always keep us together."
-fr. The Doctor Who Companion: A Good Man Goes To War original script
Doctor Who Series 6: A Good Man Goes To War
I have a couple things (posters, books, pins, etc.) but my favorite? That comes down to two things:
1. My TARDIS slippers
2. My new coffee cup