(Squeezing materials.)
Moving Flower Pots That Are Closed on the Bottom and the Sides (Not Perforated);
(Melting ice.) breaking the ice cubes to remove them from the ice tray; pouring hot liquids onto ice cubes (from a kli shieni);
Part #2. Understanding the concept of "שכר שבת בהבלעה" (shabbos earnings included with weekday earnings).