I guess I'm a fool. I have had a 4' length of 20" sonotube kicking around for a few years and the other week, my granddaughter asked if I could make her a chair with it.
Sure, Dear. You can paint it to match your desk.
So what you see is one of two. They have a plug glued into the bottom for strength and the pieces fit into the upper part will form the support for the glued panel pine seat (which will not be painted), once the scrap functioning as a spreader is removed.
Hey! I'm retired, what else am I gonna do?
Best
Les