Hmmm… need to think about this one, there are so many aspects of this that I need to find out about:

• Components available – what cool things can I use to make my product more useful/interesting?
• Materials – what could I use to build it?
• Products already out there – what are they made of? How much are they? How do they work?
• Aesthetics – how do I want my chosen design to look?
• Sustainability – how environmentally friendly can I make it? Can it be recycled?

Lots of questions but no answers yet, time for some research.