Tool Cabinet Ideas

 I've hinted about wanting to build a third level on my tool box at work. The reasons for wanting to do this are partially to gain needed storage space and also because I enjoy this type of project. Even if plans were available online for this size cabinet, I wouldn't want to follow them. I'll build this thing to my specs with the features I want. The problem I'm having is the feeling that I'm missing out on incorporating something obvious. In the video I mention wanting to add lights and speakers and even a clock. I've also considered a computer monitor. Feel free to offer your input. What would you add to this cabinet? Do you have a functional idea or even just a creative design idea? I've only just started the build so anything can still be worked into the plan.
 Check it out:

Later.