Better Lairs and Dungeons did a profile of the famous Lich whose estate sale we visited some time ago. It was before the clever lad from the village talked to a fox, climbed the lightning-struck tree, and made the toad spit out the egg that had the small bone inside. That was really a very traditional phylactery choice. This lich was quite the traditionalist. We were outbid on the homunculi and the transdimensional portal mirror, but we did snag this box.
This is a surprise treasure box. The contents will relate to the story of the box, above.