How to cut into cakes with lettering on top. (E.g. Happy Birthday cake).
a few important halachas in conjunction with trees;
wiping one's hands or mouth on a towel when they are dirty from colored foods or drinks (e.g., grape juice, pomegranates, colored ices, etc.);
is one allowed to pull a thread to tighten a hem, cuff, button, etc. on Shabbos;