Okay, so I first tried to make this C-shaped TV tray on OnShape, which came to be really hard just for something so simple. So I made it on TinkerCAD and this is what I came up with:
To avoid using screws or glue, I was going to make square holes in the bottom plate and the top surface so that the 4 legs slide into both tightly. I have not figured out how to hold the two feet yet, so I’m still thinking of a way! This is just the template until I can get into a workshop with a wood CNC.