I didn't like the screen angle on the echo show 8 2023 3rd generation when using it for drop-in video chats. This simple stand makes the screen more vertical. I used 10mm magnets that press fit into the top to hold the stand in place but they are optional. I printed this in white PLA with 10% gyroid but I think 15% would be better.

There's no special magnet alignment for the 3rd gen echo show, it's just a metal plate. You can use your own size magnets and place holes where you want them using the “add negative part” feature of Bambu studio. You can also just stick this on with chewing gum or nano tape.

The Fusion file is attached. If you want a different angle you can adjust the 20° angle in plane 1.