I just ran across another site where an artist has been molding gourds for years.
These are very intricate.

Here is a link that might be useful: Dan Ladd - Moulded Gourds

Do these actually work? I can believe it for soft skinned veggies like eggplant, but cucumbers and gourds too? Sounds very interesting. I would love to hear from those who have used these successfully. Thanks happycthulha for bringing them up!

Here is a link that might be useful: Garden Desk