Evocation, thinking and drawing:

Every laptop has an associated power block. Often the laptop is very nicely designed but the power block is often a disappointment. What shape should a power block be?

Considerations and constraints.

Why is a power block the size that is? What is in a power block? How hot does a power block get? Are there any legal issues regarding power blocks? How is the cable management handled? What should a power block look like? What colour should a power block be? What grade of cable is used? How strong should the unit and the connections be? How long should it last? Should the block survive after the laptop has been dumped? How much does the block cost? How heavy is the block? How quickly does the block recharge the laptop battery? How long is the cable? Are all blocks the same – in terms of performance?