Several years ago a lady brought me a nice miniature porcelain Ansonia 1-day. The movement had been trashed by someone, hairspring pulled out wheels folded over, broken winding arbor, etc, etc. She was about to throw it away or send it to Goodwill. I did not give her a price for restoration because I made a judgement call and decided that she would probably keep and use the clock if it were more practical. So I measured it and gave her an estimate on replacing the destroyed movement with a fancy little German Quartz fit up. That customer still mentions that little clock every time I see her. She says that the little porcelain clock is one of her prize possessions and can't believe she almost threw it away.
So, in that instance, a Quartz fit-up saved a nice little novelty from the landfill and made me a customer for life. I'll take it!