In one of our two-year-old classrooms the teachers set up a grocery store in the dramatic play center with a section filled with Jewish objects (see photo). Prior to this Jewish environment journey, I don't think we realized the value of looking at everything we do with a "Jewish lense".
Now we have two-year-old children shopping for challah covers, Shabbat candle sticks, challah, buying Jewish newspapers, Chanukah menorahs,
wine for Shabbat - you get the picture!