This is what technical rehearsals are for.
Mrs Northrop (a superb character of Dickensian proportions) has two bottles in her bag. Not, as Maria infers, something she's pilfered from the household, but a couple of stout empties which she's taking back (recycling isn't as new as we think).
Jude produced the two bottles from her bag, and clanked them together (not particularly hard) to audibly punctuate the point. Unfortunately, one of said bottles simply smashed in spectacular fashion. Rehearsal pauses while the indispensable Rhett gets down on hands and knees with a dustpan-and-brush...
Ah, the dangers of working in the theatre.