a corner of our guest bedroom functions as sarah's writing desk and recently she had expressed interest in a standing desk for her laptop. I'm going to make a keyboard tray that bolts to the wall and folds up like in this video below. There will also be an adjustable height shelf in the adjacent wall where her laptop will perch and approx eye level. Everything should fold up as conveniently as is possible, without interruption of thought. twist knobs will fine tune the height of the components. Wireless keyboards/track-pads will be used.
There should also be room for a cup of coffee to spill off the top of the ledge. Welcome the splashes.