I came across a fun video. It is a project where a woodworker made a portable camp table using the expanding base from one of the canvas folding chairs. In this video he created the table top as a folding case but if you made some similar retainer catches you could do this with a piece of flat plywood. As I have some small removable table tops planned for my interior I think I will add some catches to those tops so they can be used outdoors on these expanding legs. I frequently see the camp chairs in garage sales and thrift stores. I would not mind getting one to convert into a low table base.