Pockety (Mayuri's Pocket Watch)

Mayuri Shiina's pocket watch. It's an antique pocket watch that her grandmother gave to her, It's very precious to Mayuri.

Role
In the Alpha Attractor Field, Mayuri looks at her watch moments prior to SERN's raid on the Future Gadget Lab and remarks on how it has stopped working. From Okabe's perspective, those remarks symbolize the fact that Mayuri is about to die.

It's interesting to note that this symbolism only exists in the Steins;Gate anime. In the visual novel, her death isn't symbolized by her watch ceasing to function. This also applies to Steins;Gate Elite—her watch is not used as symbolism in this version of the story either.
 * Pockety.jpg