(Boneh-בונה Ep. 16) (#736) The mechanical parts of items in a bathroom.

Is one allowed to knock on the door with the key, knock on the window, use an electric bell, and have a little bell...

Many Various Examples of Actions One Might Not Be Aware Of Which Could Fall Under the Melacha of Memachaik;

Removing a Scab from One's Skin, Pulling Out a Non-bleeding Tooth, and Removing Warts, Pimples, etc. with a Utensil;