Some important details as to when "S'char shabbos" applies.
how to work with various types of cribs;
Using utensils, items that open and close by folding. (E.g., folding tables, strollers, playpens, folding chairs, etc.)
Making a Bruise or Using a Toothbrush When One's Gums Might Bleed. Using Floss, Toothpicks, and Dealing with Blood from a Cut;