Toys with interlocking pieces (ex. Mr. Potato Head).
A Flower Pot or Plant That Tipped Over: What Should One Do?;
Foods - Putting Cocoa Powder with Milk, Making Soda, Making Seltzer, Ice, and Cases Where It Does Apply to Food;
Understanding the concept of "שכר שבת בהבלעה" (shabbos earnings included with weekday earnings).