Boni, your bone companion

Concept: “A disembodied skull with a penchant for rambling stories of old exploits and griping about how things were better in the good old days.”
Content: Some descriptive text, simple mechanic, and sample commentary
Writing: Straightforward with humor as dry as an old bone
Art/design: Text laid out intuitively around the central image
Usability: Somewhere between an NPC and a magic item; works well as both