Although I have a nine-to-five job, I don't necessarily work nine to five. I work in spurts as long as I'm awake. I'll come up with a solution to a software problem while I'm in the shower, or shopping for groceries, or sitting in jury duty.
Likewise, I may have an idea on how to address a modeling issue at any random moment in a day. The downside is that, when this happens while I'm at work, I'm far removed from my models, and if I'm not able to see the actual size of a model, it becomes hard to determine if my idea has merit.
Usually this is not a big deal, but T scale presents a special case: it's so very, very small that there are only so many things that are feasible. So, to solve this problem, I brought a T scale car and a length of track to the office, and placed it right on my keyboard, in a little depression made to hold a pen, where it sits quite comfortably.
It not only helps me during the occasional fit of inspiration, but it also serves as a conversation-piece. Non-modelers simply cannot get over the size, and some refuse to believe it's functional—for them, I guess I'll need to bring in my layout one day, and do a little show-and-tell. That's easy enough to do, since it's about the size of a large brief case.