I was talking with Melchior in past comments about needing something to draw on besides my lap and mentioned that I had an idea for a wooden box with a top that could be held up at an angle for drawing on. This past weekend was Canadian Thanksgiving (which is why I've been remiss on posting for the past week) and I was at my parents with the kids for a few days.
My dad has a shop filled to the brim with metal and wood working tools. Plus he and Mom are renovating their house so there was a lot of scrap wood around. He and I figured out what I needed and built the box. Almost. He needed some small wood screws to attach the box and cover to each other by piano hinge but I expect to have within a week or so. I'll post a picture when I'm finished and if anybody's interested I can do up and post some plans as well. It's very simple but looks like it will be perfect for what I need.