25 Mar egg timer
Time slipping away as you watch the salt in the egg timer fall from top vessel to the bottom vessel. The power of gravity over thousands of grains of salt or sand, gives you a measure of time. How clever is that? Separately lit background of a grey canvas drape. Hourglass egg timer on a table in the foreground lit with a mixture of hard and soft light to show the glass, wood and metal surfaces and the sand/salt moving. It is a large egg timer perhaps more of an Emu egg timer!
It could be a pasta timer. There is no alarm to tell you that the time has been reached. You have to keep your eye on it!