Using bottle caps, boxes, packages with lettering, numbers, or pictures on them.
What Type of Actions Are Not Allowed as a דרבנן (Rabbinical Decree) of Zoreh;
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...
Various important examples which come up on Shabbos in conjunction with the halachas of perfuming or putting in a nice smell into an item;