A question that often gets asked in my house is, “Whose LEGO piece is this?” It could just as easily be mine as one of the kids. If it’s mine, it goes into my ‘to sort’ box. If it belongs to the boys, it goes into their ‘bucket of doom’ where the pieces of all their disassembled sets go to live in chaotic harmony. But trying to figure out what to do with these lost pieces has got me thinking: When, if ever, should AFOLs combine their collections with those of their kids?