I'm making a Pomodoro Timer to apply the Pomodoro Technique to my work. I need to display a countdown timer (count 25 minutes). Within 25 minutes I need to focus on my current task and try my best to avoid interruptions(browser facebook, check email, IM, and etc.) After 25 minutes I can have a 5 minute break.
Here are 3 ways to display a counter timer:
1. Floating Window: a small window which is always on top.
Pros: easy to place anywhere on screen.
Cons: may overlap with some area of the screen
2. System tray icon
Pros: a traditional approach that takes up little screen real estate
Cons: only 16x16 pixel to display, only limited information can be displayed
3. System Taskbar icon (Windows 7) (this one is from my own idea):
Pros: takes up little screen real estate
Cons: people may not be used to it, not too much space to display additional information.
Which approach should I pick?
==== Edit: after @Marielle 's feedback ====
Because of a technique issue, I'm making a new design as an alternative to taskbar timer:
what do you think of this design comparing with previous option 3.