Walkie-talkies. Even if I cannot see them I can just yell into it and keep them on their toes!
Fidget cubes: Occupied.
Drones: has to have a camera so I can hover over them or chase them across the yard and laugh my ass off.
ANY wooden toy that does not contain batteries: I abhor batteries and things that make noise.
Art supplies: because they always claim they are bored and have nothing to do.
Doll clothes: because I am tired of seeing naked dolls and barbies strewn about the living room.
Subscriptions to year-long items: The key here is to have the first month as the actual gift. Who the hell wants a slip of paper saying “your subscription will be here next month”? Think Clark Griswald and the Jelly of Month Club.
Sandboxes: It removes them from my house and into the great outdoors. The downside is they generally track sand BACK in.
Saucer Swing: no one has to wait their turn, they can all ride together.