How to work with solids and liquids that were put together on "erev" Shabbos.
Which Actions on Shabbos Would Fall Under the Melacha of Zoraya?;
opening up flimsy, thin bags on Shabbos;
understanding the two views with "דרך לכלוך" (coloring destructively). (Wiping one's hands on a towel from grape juice, blood, pomegranate, colored ices, etc.);