Is your office looking just a bit too professional?  Well then get yourself a solar powered disco ball, no one will ever mistake you as being one of those professional stuffy types.  It can be used in sunlight or if they didn’t give you a window it could be used in artificial light as well.  It includes a suction cup too, so you can attach it to a flat surface and watch it twirl.  To purchase it, it will cost you $29.99 from Office Play.