Just a role-playing thing, being able to stir one's drink or alchemy with silver spoons. I know it's an instrument, and I know it would be silly to see someone stirring their alchemy with a lute. So it would be specific to one instrument.
But it would also reduce what I have to carry around by one item if it was to happen, plus it would be super-realistic. Also use them to measure ingredients for cooking and alchemy or is this post going too far? ;)
of course I can always use Act which is the most under-used verb in the elanthia imo.