Seconding the other commenter: if you think we need help, just come up and simply ask if we need some help. We'll appreciate the offer, even if we don't really

Seconding the other commenter: if you think we need help, just come up and simply ask if we need some help. We'll appreciate the offer, even if we don't really need help. Maybe a couple of other pieces of advice might be: 1) don't touch them without saying something first (this can be very startling) and 2) don't be patronizing about it