I was looking for a clean solution to stack different single board computers. I found this existing design for Raspberry Pi's and adjusted it to hold a BeagleV-Fire or BeagleV-Ahead. Both boards have the screw holes at the same place.s
For the BeagleY-AI you can use the Raspberry Pi version as they have the screw holes at the same places.
The author remixed this model.
Same stacks, different mouting positions for the board.