A bright rubber duck that once squeaked when not being squeezed.
The duck seemed to squeak at random times, even when not being touched. It was deduced that these times coincided with times Omni started to fade and Move On, bringing her back to the present. After Omni got her tattoo from Charlie at The Shady Lady, the duck stopped squeaking and now resides in the kitchen at the Limbo Underground Dorms. People seem to think The Occupant squeaked it, but that's absurd.