How are you feeling today ? Blissfully happy, or sad. Maybe you are confused or frightened or bonkers or really really screamingly angry !!
Work in pairs. Set cameras to Portrait mode - find a plain background (a wall is perfect) and see how many different expressions you can record. Take it in turns. If you don't have a partner shoot Selfies
Are you a great actor or actress - Can you make yourself cry ?
If there is a window nearby try the squish challenge (pics at the bottom of the page )