Performing a service when it doesn't necessarily have to be done on Shabbos.
How Large Must an Item Be to Cause Concern When Dragging It on the Ground?;
(Melting ice.) melting ice that is sitting on top of a drink. (E.g. on top of water, orange juice, grape juice, etc.); the difference...
How should one cut grapes and olives for small children and older adults.