Silent Timer, Vibrating Timer, get them from Invisible Clock - it is fast and easy

Polder: Polder Original Cooking Timer and Thermometer, Polder Digital Timer with Vibrating, Audible, and Illuminated Alarm, Polder 77-90 Diet Utility Scale, ...

Polder: Polder Digital Timer with Vibrating, Audible, and Illuminated Alarm, Polder Original Cooking Timer and Thermometer, Polder 77-90 Diet Utility Scale, ...

A Timer that offers multiple timing options - silent or audible; Repeat Timer, Meeting/Interval Timer, 12 Alarms, and Stopwatch