What gadgets does Bradbury mention?

The Hadleys' house is filled with technical advancements and contrivances.
In the house, there are sound and smell effects initiated by mechanical devices. For instance, as George and Lydia Hadley walk through the halls of their home, lights go on and off automatically. (This was a new concept at the time of Bradbury's writing of the story.) When the Hadleys enter the nursery, sound effects are engaged as the walls "purr" and seem to disappear. Then an African veldt appears in three dimensions, along with sound effects. "And again George Hadley was filled with admiration for the mechanical genius who had conceived this room."
However, the Hadley house is so mechanized that Lydia feels that she is no longer needed. There is an automatic scrub bath for the children, so she does not bathe them or interact with them in any other way; she does not cook for them or wash and put out their clothes for school. Later, George and Lydia sit down for dinner alone because Peter and Wendy are at "a special plastic carnival" on the other side of town. Then, as George realizes the ketchup is not on the table, he asks about it. "'Sorry,' said a small voice within the table, and ketchup appeared."
Unfortunately, the mechanization of the Happylife Home has left it sterile and impersonal. As a result of all the gadgets and special effects generated by electronic contrivances, George and Lydia have little interaction with their children. This mechanization has caused the Hadleys to lose the warmth of a real home.