I found a 3D model of Medusa's face on a plaque on Makerworld and thought it would be perfect for a tombstone. The model has eyeballs that are separate from the rest of the face and it has a cutout behind so plenty of room to put some led lights. I ended up making semi-transparent eyeballs out of resin that diffuse the light from behind very nicely. I also felt that the detail of the snakes was going to get lost with only an uplight on the ground in front of her, so I mounted 2 RGB leds hidden in the canopy above her head to provide light from above. With the base the stone is more than 5' tall.