The nightmares were awesome. Was unexpected too since you couldn't predict when you'd see it, but it was such a memorable thing. Added that bit more immersion to Eorzea.

As far as I can remember, the things you could find in the bed were Mizzenmast / Roost / Hourglass biscuits, meat Miqa'bob, crystal shards (I remember ice specifically), ginger cookies (it mentioned a dream about a wizard, I think), eggs and roast pipira. May have been more, but aside from the relics I don't recall which.