Voronoi style Lampshade/Vase:
I used PETG to have the shiny effect petg offers, but it would be easier to print in pla.
To use the model as lampshade, create or modify a negative part of the size you need (I used 40 mm for a e27 fitting) .
It could also be used as a vase if you remove the negative part to create a solid bottom.
The author marked this model as their own original creation.