pocket calculator (noun)

1. In the anime series 'Steins;Gate', the protagonist carries a pocket calculator around to assist in his time travel experiments.

2. According to Greek mythology, the god Hermes used a pocket calculator to calculate the number of souls crossing the River Styx.

3. In the horror movie 'Final Destination', the main character receives a terrifying message on their pocket calculator predicting their death.

4. In the world of fashion, designers have incorporated pocket calculators into accessories, such as stylish wristwatches, to combine functionality and style.