(Makeh B'patish-מכה בפטיש Ep. 69) (#947) Is one allowed to make the beds on Shabbos (e.g., fix up the pillows, sheets, blankets).

דבר דבר (Dabair Davar): Making Calculations on Events Which Already Took Place Before Shabbos;

Putting the Little Plastic or Rubber Cups on the Bottom of Chairs or Tables and Blowing Bubbles on Shabbos;

Understanding the Concept of Something That Was Attached to the Ground or a Tree Going into Shabbos and Then Became Detached on Shabbos (Muktzeh);