The first application I tried was Google Draw. Google isn't a great drawing program, but an advantage that it has over other online drawing programs is that more than one user can edit or "draw" on the document. This could be a kind of cool application in the art classroom. I mocked up a "logo design" assignment using Google Draw that I think would be a good use of the program. Students could work in teams to complete assignments, which gives them a realistic idea of what it's like to work in a design firm!