Pentax apparently has a digital camera which you can decorate with legos. While I'll admit to being a bit skeptical as to the practicality of a camera covered in legos, it certainly is cute.
You'd have to go minimalist to get away with a kitchen island like this but it would certainly be worth it. Oh, yeah, and you'd also have to set aside 40 days and 20,000 legos. Read more about this masterpiece at Dwell.
Sure, you could build giant storage containers out of legos, but have you ever seen giant storage containers in the shape of giant legos? (Discovered via Lost Bird Found)