Busy Status Bar

I might buy this to use as follows.

I want a work-time tracker that lights a bright LED every 5 minutes or so, and as long as I'm there and working I smash a button and the light goes off for another 5 minutes. Some algorithm tracks the times I have hit the button and displays how long I have been working on said task.

I'm picturing something fairly cheap, like a stop watch or 3 button kitchen timer. A LED, a few buttons, a LCD display, a AAA battery slot, and an internal timing circuit is all that's needed (and a case to hold it together).

This would basically be a stop watch that stops on its own if neglected, and I can imagine a few uses for it.

I assume lawyers have some mechanism like this already. Law firms can require staff to allocate every 6-8 minutes of their day. Which sounds terrible and likely to be wildly inaccurate as people cannot be bothered to invest that much overhead into their job.