May one benefit from the ornaments after Sukkos? What should one do with them after Sukkos?[1]
The decorations are only prohibited in benefit during Sukkos itself, however, after Sukkos they may be used and benefited from [for non-belittling purposes]. All edible decorations, such as fruits and drinks, are to be consumed and not thrown out due to Bal Tashchis. Those items that can be recycled for another Mitzvah, such as using the decoration wine for Kiddush and flour for Lechem Mishneh, and oil for Chanukah candles, should have this done to them. If they are no longer fit for eating, then they should be discarded in a respectful manner. The same applies for all decorations that one wishes to discard that they should be discarded in a respectful manner.[2]
[1] Piskeiy Teshuvos 638:8
[2] See Admur 638:19; M”B 638:24; Vetzaruch Iyun if this applies even today when the custom is to treat them as if a Tnaiy was made over them in which they contain no Kedusha.