The majority of the chests held nothing that remained. Dust, scraps.
One, however, pinged magic: and beneath those dusty scraps, and a puff what looked like ancient, cream-colored fur (that dissolved to powder at a touch), lay a large, golden-hued pearl. The strength of the magic felt like Master-level; alive, if not enchanted.
@The Piano
The Piano's swing came with a flash of flame from the glaive's head. This flame quickly engulfed the crate on contact. It was fairly clear that a single strike would likely cause some burns against an enemy--but when dealing with old wood, reduced nearly to powder? It almost exploded, a loud WHOOMPH and flash quickly sending it all up in flame. It would be wise to back away.
Archimedes would find no immediate danger. Whether that meant it was safe, or rather that he hadn't spotted the danger, was unclear; but it was a sad truth that his tiny torch illuminated only a few feet of the dark room ahead.
The lighted one featured three glowing crystals, perhaps enchanted with light. Two still hung from the ceiling, the third lying on the floor, fallen but intact. Another three or four lay dark and shattered on the ground, their chains having long since eroded into dust. A dias at the room's center held another ancient chest, and several plinths around the room held smaller objects, too high up for the rat to see.
@The Piano