You're a keeper!
Ranks
The benefits of bobbleheads and magazines last twice as long.
Effects
Under
construction
construction
This is an approximation of the in-game effects. Some effects may be missing, incorrect, or poorly formatted, but they can often provide additional information about hidden mechanics.
Any item's effect-duration:
if *'s keywords includes BobbleheadKeyword or
if *'s keywords includes MagazineKeyword