(or gadgeteer)
... equipped with the stamina regenerating necklace, is likely to never run out of stamina, when operating gadgets or playing instruments.I find that having a bard gives me access to some spells earlier and "saves" spell picks for my casters. For instance, if you already have the Frigid Fiddle or Arresting Aria, no dire need to use spell picks for Freeze Flesh or Freeze All.
And if your bard is casting protective spells, that frees up a spellcaster to do more damage. (When don't you need more damage?)
As has been said before, I think the really great items come a little later than they are really useful. But once you get heal all from both a bard and gadgeteer, that can make many battle a bit easier.
Tools for Wizardry(r) 7