Is There a Problem with Flowing Liquids and Reference to Memchaik? (e.g., Baby Oil, Sanitizers, Liquid Hand Creams, Vitamin E Oil, etc.);
Introduction to the Concept of עובדא דחול (Uvda d'Chol) in Relation to the Melacha of M'AMER;
(Squeezing materials.) using Toothbrushes on Shabbos;