I once had a law firm order several hundred Thought On Boards for their office windows, so their employees could leave notes saying where they went and when they expected to be back. The firm had many offices with windows looking out onto corridors. Universities have these types of offices, too. Thought On Board is perfect in these types of offices, to post office hours, assignment due dates, notices like "out to lunch," "back in 15 minutes," "on a conference call from 12-1:00 p.m.," etc.
If you work in an office that has a window, Thought On Board would be perfect for you.