[Geckmumto3]

Originally Posted by IndoorKitty I have two nephews, Chief (3) and Deputy(1). Chief Nephew already has quite the Duplo collection. We gave Deputy Nephew a Duplo sorter box toy for his birthday. Apparently the addition of the sorter box has caused Lego hostilities to break out, so my sister is looking for a way to label the Duplos. I think a dot of different colored paint on the inside of each brick/figure would do the job. Would the Sharpie paint markers work? Any experience? Better ideas?

My advice would be for her to make all duplos neutral ground. We started going down this path of yours/mine/ours with regard to lego and have ultimately decided to just pit it all together and call it "theirs." Each kid knows which special set is theirs, and we have shelves to hold "untouchable" projects, but the lego in the bins is for anyone to build and play with. My head is reeling just trying to imagine labelling and keeping lego sorted....