Daily Widget Display
The Seven Days WordPress Plugin by the Wegrass Team gives you the option to set what days of the week a widget is displayed.
A nice graphical interface which you just click to show or hide what days your widget will appear.
So for testing purposes I have set up seven widgets with each one set to appear on a specific day of the week which you will be able to see in the side bar.
I like this plugin I don’t think I have come across anything similar before.
This plugin has not been updated for sometime but still works on WordPress 3.7.1 .