Junk
Between the augury and a couple detm's cast while wandering through the junkyards, okay, I'll let you in on something. You remember how you guys fought *two* guardians? And one of them wielded two swords, but the other one wielded an axe and a mace? Remember? Well the axe and the mace are both still lying there in front of the foundry, and sure enough, they radiate magic. I suppose you could just as well leave them where they are though.
Additionally, the glowing flower in the crypt radiates, as does the chainsaw and the entire glass coffin.