I have been using 4u server chassis for my last few builds, great airflow, built well, lots of space, and not designed for a 12 year old, they are pretty great.

I have been using 4u server chassis for my last few builds, great airflow, built well, lots of space, and not designed for a 12 year old, they are pretty great. The only problem is that it really illustrates how desktop class motherboards are 90 degrees out of phase with regards to airflow.