Decided something along these lies will be the way to go. Minus the fancy, and minus the drawer. I'll use plywood, all glue fastening, and mak it high enough, and with the top angled at an angle yet to be determined. I may make an "arm" on each side that will go on each side of me, so I can rest my arms on them. Either way, this will cover my needs nicely. http://www.galleryfurnituredirect.com/images/lapdesk.jpg No, there won't be any plan. Just take a few measurements, cut, glue. I'll use glue block, and a couple of braces, under the top. Yes, it'll be plenty strong enough; I did a stand to hold craft supplies the same way, that's about 3' tall, and it's held up great.
Sometimes I plan all of these things out in my head, then make it; other times I've just got an idea of what I want, and just start making it. One will look like I thought; one will sometimes surprise me - like my saw stand. Either way, works for me.
JOAT What is life without challenge and a constant stream of new humiliations? - Peter Egan