In another thread, I mentioned a brief 80's fad for adjustable bar-ends. In the close to 40 years I have been riding I remember a whole swag of such fad's. Some came and went quickly like the adjustable bar-ends, and some made it into production bikes, like belly pans. What fad's can you remember that did or did not make it, and why? And what current 'hot items' do you think will go the way of the DoDo?