Simply because they invented Tangram. I first found out about Tangram when I was an art student, and I’ve been fascinated by it’s complexity, achieved with such simple pieces. Apparently it originated from yanjitu, a furniture set from the Song Dinasty. It pleased me greatly when I first saw this:
It’s made by Daniele Lago and I’d love to have one. Actually I like it so much that I think I’ll make one for my living room :) (can’t afford to order one, these designer-furniture things cost a lot but can’t blame them). Be sure to check the site for other great designs.