Do not:
- repeat any ideas
- do not worry about 'how will I make this work as a real clock?'
Do:
- question the clock's movement (forward / reverse)
- question the clock's format: such as 2D (square, rectangular, triangular, a combination of the aforementioned) or 3D
- work in graphite or color pencil and execute these quickly, but be clear in rendering what the clock will do and look like
- additional research to further understand your theme