I went with this one:
https://www.amazon.com/gp/aw/d/B07G2...cUvbUpU6551127
Cheap and thin. The back is a clear polycarbonate while the edges are a matte tpu. I wouldn't call it super grippy, but it's a whole lot easier to hold than having no case. The corners on the back are slightly raised to keep the PC from touching a surface and the top and bottom front edges are raised to prevent the screen from touching a flat surface. I picked it mainly for the minimal thickness. I hate cases, but needed a slight space between my fingers and the edges of the screen. Keep getting to many false touches.