The project here is a smart voice controlled clock that does not require an internet connection. On a basic level, this means you can ask it what time it is, what day it is, or set a timer.

This Arduino-based Pomodoro timer project also uses this 25-minute cycle. Once you push the button to start the timer, it will run for 25 minutes, display a count-up timer and a "Study time!" ...

[Scott-28] recently sent in a particularly well-documented project that turned an antique rotary phone into a digital kitchen timer using an internal Arduino.