My prefered list for a bard is...
Infernal Horn
Hades Lyre (I don't think its a lyre, but you get the point
)
Rousing Drums
Arresting Aria
Pandomonium Pipes (forget the name)
Renassainsce Lute
Gadgeteer is
Microwave Ray
Negat Air
Port o Potty
Jackhammer
Vacuum Pump
Vaporizer.