I recently found a great website where you can design your own classroom with a limited set of furniture and technology items that begins to start a discourse about what a 21st century classroom should look like.
Check it out whether you are a designer, student, teacher, or parent it stops and makes you think. Let me know if you post a design there, I'm interested to see other people's thoughts. Below are a couple ideas that people have posted of their classroom designs. Let me know what you think.