Home shop project of the day....
I went with a simple square frame design so it's always the right height even if it gets knocked around in use.
I discovered that my new welding table worked real nice as a blackboard for writing out project notes with a sharpie. They clean off nicely when it's all done with acetone. Much easier and better to use than paper around welding projects. (I guess everyone else already knew that trick).
I also figured out I need to add better clamping options on the back of the table. As you can see in the pictures, I used two angle irons in a railroad track type fixture to get the spacing of the frame correct and consistent. But because I couldn't clamp it well enough to the back of the table, I ended up tack welding a few cross plates to the fixture to hold the spacing. Once tack welded, we realized we could use a clamp to squeeze in the sides slightly to fine tune the width. That all worked well, but it still would have been nice to have a strong clamping surface on the back of the table.
I also got the idea to use some anti-splatter spray on the table to help prevent splatter from the tack welding sticking to the table. That too seemed to work well for this type of project where it was being tacked close to the table surface.