Some important details as to when "S'char shabbos" applies.
Hanging up a Child's Swing, Cutting off Part of a Candle to Fit into the Candelabra on Yom Tov, Cutting Part of the Wick...
Moving a Plant That Might Be Dangerous or Harmful;
Spraying Bug Spray Around Insects (e.g., Ants, Spiders);