What are the packages providing a clock that is not covered by windows (so either in the status bar or on the left) and that takes minimal space (basically, no additional space)?

I've heard of Statusbar Clock, but it takes space in the status bar, and this is a problem when it becomes full. There's osso-statusbar-cpu which gives a clock for free when one wants to display the load average and memory, but it is redundant with LoadApplet and the clock isn't very visible.

I think that the best place would be over the Application Switcher icon, since the icons on the left are larger than those of the status bar and the Application Switcher icon doesn't provide any information. Would this be possible?