How do you use your keyboard on your lap? - LemmyWorld

I’m quite tall and have rather long arms. As a consequence, I rarely find myself sitting at the desk with the elbows bent at a proper angle while typing. I figured out it would be more comfortable for me to work with the keyboard sitting on my lap, tented if possible, but I couldn’t find a stable configuration with my split 34-keys board. Is there anybody that came up with a smart solution to this? I’m also considering building a small unibody like the hummingbird, but I guess it may be too small to comfortably sit on the lap.