Digital Watches on Shabbos. If Someone Left Something in Their Car on Shabbos. Using a Timer on a Hot Plate on Shabbos;
Opening a Door or a Window Near My Shabbos Candles, Chanukah Candles, etc.
Foods - Putting Cocoa Powder with Milk, Making Soda, Making Seltzer, Ice, and Cases Where It Does Apply to Food;