Using utensils, items that open and close by folding. (E.g., folding tables, strollers, playpens, folding chairs, etc.)
Understanding the Concept of מינו נצוד (a Creature That Is Commonly Trapped for Its Usage) and אין מינו נצוד (Not Commonly Trapped);
making "BOWS" and "slipknots" on Shabbos;
Understanding the concept of מלאכה שאין צריכה לגופה;