Is it forbidden to place a perfumed cup over garments on Yom Tov?

Is it a mitzvah (or obligation) to check one's garments on Erev Shabbat close to dark to ensure no forbidden item is in them?

Personal Grooming for Shabbat

If legumes were placed in the oven close to nightfall in violation, are they forbidden after Shabbat?

Returning Food to Fire (Chazarah)

If muktze was deliberately placed on a vessel with the intention of it remaining there at the onset of Shabbat, does the vessel become a basis for muktze (and thus forbidden to handle)?

Muktzeh Categories and Details

Is there bishul achar afiya (cooking after baking) — is it forbidden to place bread or baked goods in hot liquid on Shabbat?

Cooking on Shabbat

Is filtering water through garments (sudarim) forbidden on Shabbat due to laundering (libun)?

Salting and Pickling on Shabbat

For which animals is it permitted to place food or water on Shabbat, and for which is it forbidden?

Separating and Selecting (Borer)