Using utensils, items that open and close by folding. (E.g., folding tables, strollers, playpens, folding chairs, etc.)
How to Work with the Light in the Refrigerator on Shabbos. Part 2;
How to work with folding a TALIS when one takes it off on Yom Tov which falls out Erev Shabbos and folding a TALIS...