(Temporary Ohel) Hats. Adding a leaf to a table. Doll or toy houses. Collapsible toy tents;
tearing off the strip of plastic on the sides of plastic containers
Understanding the Difference Between טירחא יתירה (Tircha Yeseira, Major Exertion) and טירחא סתם (Tircha Stam, Minor Exertion) on Shabbos;