What makes you think it was free?

Yikes, that coin story hits home! I had a similar mess with a plastic toy in what we thought was a Viking layer. @terryf42, your glass piece sounds just as annoying. How do you handle the extra time and cost for those early scans? Do you scan every single spot now, or only when something feels off? What's the one object that finally made you stop taking chances?

Yeah, I felt the same way about 'simple swaps' at first. I thought switching to cloth napkins would just mean more laundry. But my friend did it and her kids loved picking out their own napkin colors. We tried it too, and now my kids race to see who can use their napkin the most times before washing. It actually saves money and cuts down on trash bags. Seeing the kids care about it makes the little effort worth it.

Well, I've seen some lessons stick for a lifetime.

Yeah, "document the damage" is key (been in that exact spot). I always took photos and wrote notes right on the bag labels.