For some hackers like me, arrangements like Hemingway's (a typewriter on top of a bookshelf) are too cramped for a laptop/desktop and anything else. In my case, in addition to an iMac, I need a traditional paper notebook for a math class, a graphing calculator, and a space to charge/test my iPad and phones. I experimented by propping up an end table on speakers and making adjustments with stacks of books. The surface area of an end table was far too small. So, I reverted back to my L-shaped sitting desk, which is a little too tricky at this time to prop up (it has a thin metal frame and has glass for all the surfaces).