Utilizing Design in Product Development

I am a huge fan of simplicity, and as I explore the theme "Know Thyself" the design is being applied to some fun new products:

There's the Postcard:

Then there's the two mugs, one full colour and the other is a bit more mysterious!

 

What kind of products do you like? Do you make products as a creator? If so, what do you make or how do you apply your designs?