Measuring for a mitzvah - "מדידה של מצוה". Preferably should be done on "ערב שבת".
Understanding the Concept of טירחא יתירה (Excessive Tircha, Major Exertion) on Shabbos;
Reviewing practical applications in LOSH.
Is One Allowed to Relieve Pressure from a Blister, Pimple, Boil, etc. on Shabbos?;