New artifact Apiarist’s Veil, a cloth hat, perhaps an elven helm or fedora, that gives warning of all insects and pacifies nearby bees.

New artifact Regicider (or Regicide, Usurper or Royalbane): a sword of some type that isn’t already overrepresented in artifacts that has bonuses and warns to monsters with the M2_LORD and/or M2_PRINCE flags. Maybe it would also work on demon lords, depending on if they are considered nobility, or just overlords.

On a somewhat sillier note its attributes could also extend to queen bees and also have some ability to detect royal jelly on the map (invoke effect?)

Demonbane, while wielded, warns of demons.