#7 Looks like Absinthe spoons. Place a suger cube on them and hold it over a glass as you slowly pour Absinthe over the sugar cube, melting and mixing the sugar into the drink. Some would drink it straight, while others preferred to sweeten it this way.

#3 That's a torture chair. You wet the pads with water so they conduct electricity better when you hook the electrodes up to it and I'm not even go into detail about how they use the pommel between the legs.