I'm running Carrion Crown and just had a new player join. His character is a sort of steampunk-ish ghostbuster, reflavoring some of his spells as home-made gizmos and gadgets. My knowledge of the game isn't quite as all-encompassingly encyclopedic as it once was, so what are some on-theme spells and items for this character?
Threnodic Spell Metamagic comes to mind. Firearms, harpoons, bolas, and/or nets that are all enchanted with Ghost Touch.
Handy spells:
Carrion Compass, Hide from Undead, Speak with Dead, Undeath to Death, Ghostbane Dirge, Mass Ghostbane Dirge, Disrupt Undead, Detect Undead, Positive Pulse, Greater Positive Pulse, Boneshaker, Command Undead, Halt Undead, Undeath Ward, Control Undead